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Finding the Fourth Proportional to 139,257.60, 192,174.88 and 75,594.88

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Solution

The fourth proportional to 139,257.60, 192,174.88 and 75,594.88 is: 104,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,257.60 : 192,174.88 = 75,594.88 : x
  2. Step 2: Convert to fraction form
    139,257.60/192,174.88 = 75,594.88/x
  3. Step 3: Cross multiply
    139,257.60x = 192,174.88 × 75,594.88
  4. Step 4: Simplify right side
    139,257.60x = 14,527,436,992.61
  5. Step 5: Solve for x
    x = 14,527,436,992.61/139,257.60
  6. Step 6: Final answer
    x = 104,320.60

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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.