Home / 138,729.90-208,167.74-75,595.26

Finding the Fourth Proportional to 138,729.90, 208,167.74 and 75,595.26

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Solution

The fourth proportional to 138,729.90, 208,167.74 and 75,595.26 is: 113,432.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,729.90 : 208,167.74 = 75,595.26 : x
  2. Step 2: Convert to fraction form
    138,729.90/208,167.74 = 75,595.26/x
  3. Step 3: Cross multiply
    138,729.90x = 208,167.74 × 75,595.26
  4. Step 4: Simplify right side
    138,729.90x = 15,736,494,428.91
  5. Step 5: Solve for x
    x = 15,736,494,428.91/138,729.90
  6. Step 6: Final answer
    x = 113,432.61

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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.