Home / 135,542.80-187,115.16-90,247.60

Finding the Fourth Proportional to 135,542.80, 187,115.16 and 90,247.60

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Solution

The fourth proportional to 135,542.80, 187,115.16 and 90,247.60 is: 124,585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,542.80 : 187,115.16 = 90,247.60 : x
  2. Step 2: Convert to fraction form
    135,542.80/187,115.16 = 90,247.60/x
  3. Step 3: Cross multiply
    135,542.80x = 187,115.16 × 90,247.60
  4. Step 4: Simplify right side
    135,542.80x = 16,886,694,113.62
  5. Step 5: Solve for x
    x = 16,886,694,113.62/135,542.80
  6. Step 6: Final answer
    x = 124,585.70

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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.