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Finding the Fourth Proportional to 128,613.62, 192,848.31 and 88,132.82

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Solution

The fourth proportional to 128,613.62, 192,848.31 and 88,132.82 is: 132,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,613.62 : 192,848.31 = 88,132.82 : x
  2. Step 2: Convert to fraction form
    128,613.62/192,848.31 = 88,132.82/x
  3. Step 3: Cross multiply
    128,613.62x = 192,848.31 × 88,132.82
  4. Step 4: Simplify right side
    128,613.62x = 16,996,265,392.53
  5. Step 5: Solve for x
    x = 16,996,265,392.53/128,613.62
  6. Step 6: Final answer
    x = 132,149.81

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1.5x scale

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.