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Finding the Fourth Proportional to 192,212.52, 288,318.78 and 87,029.16

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Solution

The fourth proportional to 192,212.52, 288,318.78 and 87,029.16 is: 130,543.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,212.52 : 288,318.78 = 87,029.16 : x
  2. Step 2: Convert to fraction form
    192,212.52/288,318.78 = 87,029.16/x
  3. Step 3: Cross multiply
    192,212.52x = 288,318.78 × 87,029.16
  4. Step 4: Simplify right side
    192,212.52x = 25,092,141,235.62
  5. Step 5: Solve for x
    x = 25,092,141,235.62/192,212.52
  6. Step 6: Final answer
    x = 130,543.74

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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.