Home / 138,882.88-208,334.13-68,743.36

Finding the Fourth Proportional to 138,882.88, 208,334.13 and 68,743.36

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Solution

The fourth proportional to 138,882.88, 208,334.13 and 68,743.36 is: 103,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,882.88 : 208,334.13 = 68,743.36 : x
  2. Step 2: Convert to fraction form
    138,882.88/208,334.13 = 68,743.36/x
  3. Step 3: Cross multiply
    138,882.88x = 208,334.13 × 68,743.36
  4. Step 4: Simplify right side
    138,882.88x = 14,321,588,098.88
  5. Step 5: Solve for x
    x = 14,321,588,098.88/138,882.88
  6. Step 6: Final answer
    x = 103,119.90

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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.