Home / 84,819.40-127,229.10-79,570.60

Finding the Fourth Proportional to 84,819.40, 127,229.10 and 79,570.60

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Solution

The fourth proportional to 84,819.40, 127,229.10 and 79,570.60 is: 119,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,819.40 : 127,229.10 = 79,570.60 : x
  2. Step 2: Convert to fraction form
    84,819.40/127,229.10 = 79,570.60/x
  3. Step 3: Cross multiply
    84,819.40x = 127,229.10 × 79,570.60
  4. Step 4: Simplify right side
    84,819.40x = 10,123,695,824.46
  5. Step 5: Solve for x
    x = 10,123,695,824.46/84,819.40
  6. Step 6: Final answer
    x = 119,355.90

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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.