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Finding the Fourth Proportional to 108,451.68, 149,666 and 60,704.64

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Solution

The fourth proportional to 108,451.68, 149,666 and 60,704.64 is: 83,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,451.68 : 149,666 = 60,704.64 : x
  2. Step 2: Convert to fraction form
    108,451.68/149,666 = 60,704.64/x
  3. Step 3: Cross multiply
    108,451.68x = 149,666 × 60,704.64
  4. Step 4: Simplify right side
    108,451.68x = 9,085,420,650.24
  5. Step 5: Solve for x
    x = 9,085,420,650.24/108,451.68
  6. Step 6: Final answer
    x = 83,773.90

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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.