Home / 80,576.10-120,864.15-77,163.30

Finding the Fourth Proportional to 80,576.10, 120,864.15 and 77,163.30

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Solution

The fourth proportional to 80,576.10, 120,864.15 and 77,163.30 is: 115,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,576.10 : 120,864.15 = 77,163.30 : x
  2. Step 2: Convert to fraction form
    80,576.10/120,864.15 = 77,163.30/x
  3. Step 3: Cross multiply
    80,576.10x = 120,864.15 × 77,163.30
  4. Step 4: Simplify right side
    80,576.10x = 9,326,276,665.70
  5. Step 5: Solve for x
    x = 9,326,276,665.70/80,576.10
  6. Step 6: Final answer
    x = 115,744.95

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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.