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Finding the Fourth Proportional to 139,301.32, 192,230.50 and 75,637.72

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Solution

The fourth proportional to 139,301.32, 192,230.50 and 75,637.72 is: 104,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,301.32 : 192,230.50 = 75,637.72 : x
  2. Step 2: Convert to fraction form
    139,301.32/192,230.50 = 75,637.72/x
  3. Step 3: Cross multiply
    139,301.32x = 192,230.50 × 75,637.72
  4. Step 4: Simplify right side
    139,301.32x = 14,539,876,734.46
  5. Step 5: Solve for x
    x = 14,539,876,734.46/139,301.32
  6. Step 6: Final answer
    x = 104,377.16

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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.