Home / 81,397.24-122,283.56-78,034.25

Finding the Fourth Proportional to 81,397.24, 122,283.56 and 78,034.25

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Solution

The fourth proportional to 81,397.24, 122,283.56 and 78,034.25 is: 117,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.24 : 122,283.56 = 78,034.25 : x
  2. Step 2: Convert to fraction form
    81,397.24/122,283.56 = 78,034.25/x
  3. Step 3: Cross multiply
    81,397.24x = 122,283.56 × 78,034.25
  4. Step 4: Simplify right side
    81,397.24x = 9,542,306,392.72
  5. Step 5: Solve for x
    x = 9,542,306,392.72/81,397.24
  6. Step 6: Final answer
    x = 117,231.33

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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.