Home / 138,128.82-207,146.13-53,882.34

Finding the Fourth Proportional to 138,128.82, 207,146.13 and 53,882.34

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Solution

The fourth proportional to 138,128.82, 207,146.13 and 53,882.34 is: 80,805.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,128.82 : 207,146.13 = 53,882.34 : x
  2. Step 2: Convert to fraction form
    138,128.82/207,146.13 = 53,882.34/x
  3. Step 3: Cross multiply
    138,128.82x = 207,146.13 × 53,882.34
  4. Step 4: Simplify right side
    138,128.82x = 11,161,518,206.34
  5. Step 5: Solve for x
    x = 11,161,518,206.34/138,128.82
  6. Step 6: Final answer
    x = 80,805.14

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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.