Home / 83,215.38-124,973.42-76,539.86

Finding the Fourth Proportional to 83,215.38, 124,973.42 and 76,539.86

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Solution

The fourth proportional to 83,215.38, 124,973.42 and 76,539.86 is: 114,948.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,215.38 : 124,973.42 = 76,539.86 : x
  2. Step 2: Convert to fraction form
    83,215.38/124,973.42 = 76,539.86/x
  3. Step 3: Cross multiply
    83,215.38x = 124,973.42 × 76,539.86
  4. Step 4: Simplify right side
    83,215.38x = 9,565,447,062.95
  5. Step 5: Solve for x
    x = 9,565,447,062.95/83,215.38
  6. Step 6: Final answer
    x = 114,948.07

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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.