Home / 129,005.86-178,032.50-71,646.08

Finding the Fourth Proportional to 129,005.86, 178,032.50 and 71,646.08

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Solution

The fourth proportional to 129,005.86, 178,032.50 and 71,646.08 is: 98,874.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,005.86 : 178,032.50 = 71,646.08 : x
  2. Step 2: Convert to fraction form
    129,005.86/178,032.50 = 71,646.08/x
  3. Step 3: Cross multiply
    129,005.86x = 178,032.50 × 71,646.08
  4. Step 4: Simplify right side
    129,005.86x = 12,755,330,737.60
  5. Step 5: Solve for x
    x = 12,755,330,737.60/129,005.86
  6. Step 6: Final answer
    x = 98,874.04

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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.