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Finding the Fourth Proportional to 125,502.15, 188,126.87 and 55,369.11

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Solution

The fourth proportional to 125,502.15, 188,126.87 and 55,369.11 is: 82,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,502.15 : 188,126.87 = 55,369.11 : x
  2. Step 2: Convert to fraction form
    125,502.15/188,126.87 = 55,369.11/x
  3. Step 3: Cross multiply
    125,502.15x = 188,126.87 × 55,369.11
  4. Step 4: Simplify right side
    125,502.15x = 10,416,417,082.14
  5. Step 5: Solve for x
    x = 10,416,417,082.14/125,502.15
  6. Step 6: Final answer
    x = 82,997.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.