Home / 138,255.40-207,293.82-75,909.16

Finding the Fourth Proportional to 138,255.40, 207,293.82 and 75,909.16

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Solution

The fourth proportional to 138,255.40, 207,293.82 and 75,909.16 is: 113,814.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,255.40 : 207,293.82 = 75,909.16 : x
  2. Step 2: Convert to fraction form
    138,255.40/207,293.82 = 75,909.16/x
  3. Step 3: Cross multiply
    138,255.40x = 207,293.82 × 75,909.16
  4. Step 4: Simplify right side
    138,255.40x = 15,735,499,749.39
  5. Step 5: Solve for x
    x = 15,735,499,749.39/138,255.40
  6. Step 6: Final answer
    x = 113,814.72

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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.