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Finding the Fourth Proportional to 108,229.20, 149,402.28 and 65,801.28

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Solution

The fourth proportional to 108,229.20, 149,402.28 and 65,801.28 is: 90,833.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,229.20 : 149,402.28 = 65,801.28 : x
  2. Step 2: Convert to fraction form
    108,229.20/149,402.28 = 65,801.28/x
  3. Step 3: Cross multiply
    108,229.20x = 149,402.28 × 65,801.28
  4. Step 4: Simplify right side
    108,229.20x = 9,830,861,258.92
  5. Step 5: Solve for x
    x = 9,830,861,258.92/108,229.20
  6. Step 6: Final answer
    x = 90,833.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.