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Finding the Fourth Proportional to 139,425.27, 192,406.50 and 75,763.08

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Solution

The fourth proportional to 139,425.27, 192,406.50 and 75,763.08 is: 104,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,425.27 : 192,406.50 = 75,763.08 : x
  2. Step 2: Convert to fraction form
    139,425.27/192,406.50 = 75,763.08/x
  3. Step 3: Cross multiply
    139,425.27x = 192,406.50 × 75,763.08
  4. Step 4: Simplify right side
    139,425.27x = 14,577,309,052.02
  5. Step 5: Solve for x
    x = 14,577,309,052.02/139,425.27
  6. Step 6: Final answer
    x = 104,552.85

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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.