Home / 90,865.20-136,320.48-89,358.42

Finding the Fourth Proportional to 90,865.20, 136,320.48 and 89,358.42

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Solution

The fourth proportional to 90,865.20, 136,320.48 and 89,358.42 is: 134,059.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,865.20 : 136,320.48 = 89,358.42 : x
  2. Step 2: Convert to fraction form
    90,865.20/136,320.48 = 89,358.42/x
  3. Step 3: Cross multiply
    90,865.20x = 136,320.48 × 89,358.42
  4. Step 4: Simplify right side
    90,865.20x = 12,181,382,706.44
  5. Step 5: Solve for x
    x = 12,181,382,706.44/90,865.20
  6. Step 6: Final answer
    x = 134,059.93

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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.