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Finding the Fourth Proportional to 108,625.80, 162,930.60 and 45,429.60

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Solution

The fourth proportional to 108,625.80, 162,930.60 and 45,429.60 is: 68,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,625.80 : 162,930.60 = 45,429.60 : x
  2. Step 2: Convert to fraction form
    108,625.80/162,930.60 = 45,429.60/x
  3. Step 3: Cross multiply
    108,625.80x = 162,930.60 × 45,429.60
  4. Step 4: Simplify right side
    108,625.80x = 7,401,871,985.76
  5. Step 5: Solve for x
    x = 7,401,871,985.76/108,625.80
  6. Step 6: Final answer
    x = 68,141.01

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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.