Home / 91,542.90-137,862.93-80,569.56

Finding the Fourth Proportional to 91,542.90, 137,862.93 and 80,569.56

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Solution

The fourth proportional to 91,542.90, 137,862.93 and 80,569.56 is: 121,337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,542.90 : 137,862.93 = 80,569.56 : x
  2. Step 2: Convert to fraction form
    91,542.90/137,862.93 = 80,569.56/x
  3. Step 3: Cross multiply
    91,542.90x = 137,862.93 × 80,569.56
  4. Step 4: Simplify right side
    91,542.90x = 11,107,555,610.41
  5. Step 5: Solve for x
    x = 11,107,555,610.41/91,542.90
  6. Step 6: Final answer
    x = 121,337.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.