Home / 89,819.40-134,729.10-79,710.60

Finding the Fourth Proportional to 89,819.40, 134,729.10 and 79,710.60

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Solution

The fourth proportional to 89,819.40, 134,729.10 and 79,710.60 is: 119,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,819.40 : 134,729.10 = 79,710.60 : x
  2. Step 2: Convert to fraction form
    89,819.40/134,729.10 = 79,710.60/x
  3. Step 3: Cross multiply
    89,819.40x = 134,729.10 × 79,710.60
  4. Step 4: Simplify right side
    89,819.40x = 10,739,337,398.46
  5. Step 5: Solve for x
    x = 10,739,337,398.46/89,819.40
  6. Step 6: Final answer
    x = 119,565.90

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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.