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Finding the Fourth Proportional to 138,277.62, 207,420.53 and 54,034.38

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Solution

The fourth proportional to 138,277.62, 207,420.53 and 54,034.38 is: 81,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,277.62 : 207,420.53 = 54,034.38 : x
  2. Step 2: Convert to fraction form
    138,277.62/207,420.53 = 54,034.38/x
  3. Step 3: Cross multiply
    138,277.62x = 207,420.53 × 54,034.38
  4. Step 4: Simplify right side
    138,277.62x = 11,207,839,467.65
  5. Step 5: Solve for x
    x = 11,207,839,467.65/138,277.62
  6. Step 6: Final answer
    x = 81,053.17

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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.