Home / 135,613.16-187,157.20-75,202.72

Finding the Fourth Proportional to 135,613.16, 187,157.20 and 75,202.72

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Solution

The fourth proportional to 135,613.16, 187,157.20 and 75,202.72 is: 103,785.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,613.16 : 187,157.20 = 75,202.72 : x
  2. Step 2: Convert to fraction form
    135,613.16/187,157.20 = 75,202.72/x
  3. Step 3: Cross multiply
    135,613.16x = 187,157.20 × 75,202.72
  4. Step 4: Simplify right side
    135,613.16x = 14,074,730,507.58
  5. Step 5: Solve for x
    x = 14,074,730,507.58/135,613.16
  6. Step 6: Final answer
    x = 103,785.88

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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.