Home / 91,830.60-137,454.30-84,832.20

Finding the Fourth Proportional to 91,830.60, 137,454.30 and 84,832.20

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Solution

The fourth proportional to 91,830.60, 137,454.30 and 84,832.20 is: 126,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,830.60 : 137,454.30 = 84,832.20 : x
  2. Step 2: Convert to fraction form
    91,830.60/137,454.30 = 84,832.20/x
  3. Step 3: Cross multiply
    91,830.60x = 137,454.30 × 84,832.20
  4. Step 4: Simplify right side
    91,830.60x = 11,660,550,668.46
  5. Step 5: Solve for x
    x = 11,660,550,668.46/91,830.60
  6. Step 6: Final answer
    x = 126,978.92

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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.