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Finding the Fourth Proportional to 139,650.30, 192,722.22 and 75,990.42

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Solution

The fourth proportional to 139,650.30, 192,722.22 and 75,990.42 is: 104,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,650.30 : 192,722.22 = 75,990.42 : x
  2. Step 2: Convert to fraction form
    139,650.30/192,722.22 = 75,990.42/x
  3. Step 3: Cross multiply
    139,650.30x = 192,722.22 × 75,990.42
  4. Step 4: Simplify right side
    139,650.30x = 14,645,042,441.13
  5. Step 5: Solve for x
    x = 14,645,042,441.13/139,650.30
  6. Step 6: Final answer
    x = 104,869.39

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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.