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Finding the Fourth Proportional to 139,280.30, 192,207.11 and 75,616.73

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Solution

The fourth proportional to 139,280.30, 192,207.11 and 75,616.73 is: 104,351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,280.30 : 192,207.11 = 75,616.73 : x
  2. Step 2: Convert to fraction form
    139,280.30/192,207.11 = 75,616.73/x
  3. Step 3: Cross multiply
    139,280.30x = 192,207.11 × 75,616.73
  4. Step 4: Simplify right side
    139,280.30x = 14,534,073,140.95
  5. Step 5: Solve for x
    x = 14,534,073,140.95/139,280.30
  6. Step 6: Final answer
    x = 104,351.25

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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.