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Finding the Fourth Proportional to 100,672.04, 138,870.02 and 62,414.12

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Solution

The fourth proportional to 100,672.04, 138,870.02 and 62,414.12 is: 86,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,672.04 : 138,870.02 = 62,414.12 : x
  2. Step 2: Convert to fraction form
    100,672.04/138,870.02 = 62,414.12/x
  3. Step 3: Cross multiply
    100,672.04x = 138,870.02 × 62,414.12
  4. Step 4: Simplify right side
    100,672.04x = 8,667,450,092.68
  5. Step 5: Solve for x
    x = 8,667,450,092.68/100,672.04
  6. Step 6: Final answer
    x = 86,095.90

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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.