Home / 112,891.20-155,810.16-65,137.92

Finding the Fourth Proportional to 112,891.20, 155,810.16 and 65,137.92

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Solution

The fourth proportional to 112,891.20, 155,810.16 and 65,137.92 is: 89,902.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,891.20 : 155,810.16 = 65,137.92 : x
  2. Step 2: Convert to fraction form
    112,891.20/155,810.16 = 65,137.92/x
  3. Step 3: Cross multiply
    112,891.20x = 155,810.16 × 65,137.92
  4. Step 4: Simplify right side
    112,891.20x = 10,149,149,737.27
  5. Step 5: Solve for x
    x = 10,149,149,737.27/112,891.20
  6. Step 6: Final answer
    x = 89,902.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.