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Finding the Fourth Proportional to 138,937.66, 208,424.13 and 44,134.03

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Solution

The fourth proportional to 138,937.66, 208,424.13 and 44,134.03 is: 66,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,937.66 : 208,424.13 = 44,134.03 : x
  2. Step 2: Convert to fraction form
    138,937.66/208,424.13 = 44,134.03/x
  3. Step 3: Cross multiply
    138,937.66x = 208,424.13 × 44,134.03
  4. Step 4: Simplify right side
    138,937.66x = 9,198,596,806.14
  5. Step 5: Solve for x
    x = 9,198,596,806.14/138,937.66
  6. Step 6: Final answer
    x = 66,206.65

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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.