Home / 129,454.91-178,703.01-87,038.04

Finding the Fourth Proportional to 129,454.91, 178,703.01 and 87,038.04

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Solution

The fourth proportional to 129,454.91, 178,703.01 and 87,038.04 is: 120,149.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,454.91 : 178,703.01 = 87,038.04 : x
  2. Step 2: Convert to fraction form
    129,454.91/178,703.01 = 87,038.04/x
  3. Step 3: Cross multiply
    129,454.91x = 178,703.01 × 87,038.04
  4. Step 4: Simplify right side
    129,454.91x = 15,553,959,732.50
  5. Step 5: Solve for x
    x = 15,553,959,732.50/129,454.91
  6. Step 6: Final answer
    x = 120,149.63

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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.