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Finding the Fourth Proportional to 128,473.52, 192,711.49 and 57,399.73

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Solution

The fourth proportional to 128,473.52, 192,711.49 and 57,399.73 is: 86,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,473.52 : 192,711.49 = 57,399.73 : x
  2. Step 2: Convert to fraction form
    128,473.52/192,711.49 = 57,399.73/x
  3. Step 3: Cross multiply
    128,473.52x = 192,711.49 × 57,399.73
  4. Step 4: Simplify right side
    128,473.52x = 11,061,586,868.62
  5. Step 5: Solve for x
    x = 11,061,586,868.62/128,473.52
  6. Step 6: Final answer
    x = 86,100.13

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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.