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Finding the Fourth Proportional to 128,601.87, 192,832.33 and 39,830.73

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Solution

The fourth proportional to 128,601.87, 192,832.33 and 39,830.73 is: 59,724.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601.87 : 192,832.33 = 39,830.73 : x
  2. Step 2: Convert to fraction form
    128,601.87/192,832.33 = 39,830.73/x
  3. Step 3: Cross multiply
    128,601.87x = 192,832.33 × 39,830.73
  4. Step 4: Simplify right side
    128,601.87x = 7,680,651,407.76
  5. Step 5: Solve for x
    x = 7,680,651,407.76/128,601.87
  6. Step 6: Final answer
    x = 59,724.26

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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.