Home / 84,272.40-126,197.19-76,283.78

Finding the Fourth Proportional to 84,272.40, 126,197.19 and 76,283.78

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Solution

The fourth proportional to 84,272.40, 126,197.19 and 76,283.78 is: 114,234.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,272.40 : 126,197.19 = 76,283.78 : x
  2. Step 2: Convert to fraction form
    84,272.40/126,197.19 = 76,283.78/x
  3. Step 3: Cross multiply
    84,272.40x = 126,197.19 × 76,283.78
  4. Step 4: Simplify right side
    84,272.40x = 9,626,798,047.59
  5. Step 5: Solve for x
    x = 9,626,798,047.59/84,272.40
  6. Step 6: Final answer
    x = 114,234.29

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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.