Home / 138,909.33-191,683.56-81,542.52

Finding the Fourth Proportional to 138,909.33, 191,683.56 and 81,542.52

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Solution

The fourth proportional to 138,909.33, 191,683.56 and 81,542.52 is: 112,522.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,909.33 : 191,683.56 = 81,542.52 : x
  2. Step 2: Convert to fraction form
    138,909.33/191,683.56 = 81,542.52/x
  3. Step 3: Cross multiply
    138,909.33x = 191,683.56 × 81,542.52
  4. Step 4: Simplify right side
    138,909.33x = 15,630,360,524.97
  5. Step 5: Solve for x
    x = 15,630,360,524.97/138,909.33
  6. Step 6: Final answer
    x = 112,522.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.