Home / 138,927.90-208,170.42-88,966.90

Finding the Fourth Proportional to 138,927.90, 208,170.42 and 88,966.90

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Solution

The fourth proportional to 138,927.90, 208,170.42 and 88,966.90 is: 133,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,927.90 : 208,170.42 = 88,966.90 : x
  2. Step 2: Convert to fraction form
    138,927.90/208,170.42 = 88,966.90/x
  3. Step 3: Cross multiply
    138,927.90x = 208,170.42 × 88,966.90
  4. Step 4: Simplify right side
    138,927.90x = 18,520,276,939.10
  5. Step 5: Solve for x
    x = 18,520,276,939.10/138,927.90
  6. Step 6: Final answer
    x = 133,308.55

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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.