Home / 108,871,410.20-163,307,115.30-81,997,554.20

Finding the Fourth Proportional to 108,871,410.20, 163,307,115.30 and 81,997,554.20

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Solution

The fourth proportional to 108,871,410.20, 163,307,115.30 and 81,997,554.20 is: 122,996,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,871,410.20 : 163,307,115.30 = 81,997,554.20 : x
  2. Step 2: Convert to fraction form
    108,871,410.20/163,307,115.30 = 81,997,554.20/x
  3. Step 3: Cross multiply
    108,871,410.20x = 163,307,115.30 × 81,997,554.20
  4. Step 4: Simplify right side
    108,871,410.20x = 13,390,784,038,057,400
  5. Step 5: Solve for x
    x = 13,390,784,038,057,400/108,871,410.20
  6. Step 6: Final answer
    x = 122,996,331.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.