Home / 89,839.40-134,499.90-80,508.20

Finding the Fourth Proportional to 89,839.40, 134,499.90 and 80,508.20

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Solution

The fourth proportional to 89,839.40, 134,499.90 and 80,508.20 is: 120,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,839.40 : 134,499.90 = 80,508.20 : x
  2. Step 2: Convert to fraction form
    89,839.40/134,499.90 = 80,508.20/x
  3. Step 3: Cross multiply
    89,839.40x = 134,499.90 × 80,508.20
  4. Step 4: Simplify right side
    89,839.40x = 10,828,344,849.18
  5. Step 5: Solve for x
    x = 10,828,344,849.18/89,839.40
  6. Step 6: Final answer
    x = 120,530.02

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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.