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Finding the Fourth Proportional to 108,666.28, 149,951.28 and 60,918.40

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Solution

The fourth proportional to 108,666.28, 149,951.28 and 60,918.40 is: 84,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,666.28 : 149,951.28 = 60,918.40 : x
  2. Step 2: Convert to fraction form
    108,666.28/149,951.28 = 60,918.40/x
  3. Step 3: Cross multiply
    108,666.28x = 149,951.28 × 60,918.40
  4. Step 4: Simplify right side
    108,666.28x = 9,134,792,055.55
  5. Step 5: Solve for x
    x = 9,134,792,055.55/108,666.28
  6. Step 6: Final answer
    x = 84,062.80

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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.