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Finding the Fourth Proportional to 128,591.04, 192,909.92 and 53,673.92

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Solution

The fourth proportional to 128,591.04, 192,909.92 and 53,673.92 is: 80,520.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,591.04 : 192,909.92 = 53,673.92 : x
  2. Step 2: Convert to fraction form
    128,591.04/192,909.92 = 53,673.92/x
  3. Step 3: Cross multiply
    128,591.04x = 192,909.92 × 53,673.92
  4. Step 4: Simplify right side
    128,591.04x = 10,354,231,613.29
  5. Step 5: Solve for x
    x = 10,354,231,613.29/128,591.04
  6. Step 6: Final answer
    x = 80,520.63

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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.