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Finding the Fourth Proportional to 125,507.65, 188,135.11 and 55,374.61

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Solution

The fourth proportional to 125,507.65, 188,135.11 and 55,374.61 is: 83,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,507.65 : 188,135.11 = 55,374.61 : x
  2. Step 2: Convert to fraction form
    125,507.65/188,135.11 = 55,374.61/x
  3. Step 3: Cross multiply
    125,507.65x = 188,135.11 × 55,374.61
  4. Step 4: Simplify right side
    125,507.65x = 10,417,908,343.56
  5. Step 5: Solve for x
    x = 10,417,908,343.56/125,507.65
  6. Step 6: Final answer
    x = 83,006.16

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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.