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Finding the Fourth Proportional to 108,722.40, 163,083.60 and 100,849.20

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Solution

The fourth proportional to 108,722.40, 163,083.60 and 100,849.20 is: 151,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,722.40 : 163,083.60 = 100,849.20 : x
  2. Step 2: Convert to fraction form
    108,722.40/163,083.60 = 100,849.20/x
  3. Step 3: Cross multiply
    108,722.40x = 163,083.60 × 100,849.20
  4. Step 4: Simplify right side
    108,722.40x = 16,446,850,593.12
  5. Step 5: Solve for x
    x = 16,446,850,593.12/108,722.40
  6. Step 6: Final answer
    x = 151,273.80

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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.