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Finding the Fourth Proportional to 139,454.79, 192,449.12 and 75,792.60

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Solution

The fourth proportional to 139,454.79, 192,449.12 and 75,792.60 is: 104,594.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454.79 : 192,449.12 = 75,792.60 : x
  2. Step 2: Convert to fraction form
    139,454.79/192,449.12 = 75,792.60/x
  3. Step 3: Cross multiply
    139,454.79x = 192,449.12 × 75,792.60
  4. Step 4: Simplify right side
    139,454.79x = 14,586,218,793.55
  5. Step 5: Solve for x
    x = 14,586,218,793.55/139,454.79
  6. Step 6: Final answer
    x = 104,594.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.