Home / 129,004.82-178,032.55-71,644.40

Finding the Fourth Proportional to 129,004.82, 178,032.55 and 71,644.40

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Solution

The fourth proportional to 129,004.82, 178,032.55 and 71,644.40 is: 98,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,004.82 : 178,032.55 = 71,644.40 : x
  2. Step 2: Convert to fraction form
    129,004.82/178,032.55 = 71,644.40/x
  3. Step 3: Cross multiply
    129,004.82x = 178,032.55 × 71,644.40
  4. Step 4: Simplify right side
    129,004.82x = 12,755,034,957.90
  5. Step 5: Solve for x
    x = 12,755,034,957.90/129,004.82
  6. Step 6: Final answer
    x = 98,872.55

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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.