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Finding the Fourth Proportional to 125,048.34, 172,565.64 and 67,687.38

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Solution

The fourth proportional to 125,048.34, 172,565.64 and 67,687.38 is: 93,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,048.34 : 172,565.64 = 67,687.38 : x
  2. Step 2: Convert to fraction form
    125,048.34/172,565.64 = 67,687.38/x
  3. Step 3: Cross multiply
    125,048.34x = 172,565.64 × 67,687.38
  4. Step 4: Simplify right side
    125,048.34x = 11,680,516,049.62
  5. Step 5: Solve for x
    x = 11,680,516,049.62/125,048.34
  6. Step 6: Final answer
    x = 93,408.01

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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.