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Finding the Fourth Proportional to 138,773.89, 208,168.20 and 44,011.54

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Solution

The fourth proportional to 138,773.89, 208,168.20 and 44,011.54 is: 66,019.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,773.89 : 208,168.20 = 44,011.54 : x
  2. Step 2: Convert to fraction form
    138,773.89/208,168.20 = 44,011.54/x
  3. Step 3: Cross multiply
    138,773.89x = 208,168.20 × 44,011.54
  4. Step 4: Simplify right side
    138,773.89x = 9,161,803,061.03
  5. Step 5: Solve for x
    x = 9,161,803,061.03/138,773.89
  6. Step 6: Final answer
    x = 66,019.65

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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.