Home / 139,730.40-192,823.92-79,306.62

Finding the Fourth Proportional to 139,730.40, 192,823.92 and 79,306.62

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Solution

The fourth proportional to 139,730.40, 192,823.92 and 79,306.62 is: 109,440.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,730.40 : 192,823.92 = 79,306.62 : x
  2. Step 2: Convert to fraction form
    139,730.40/192,823.92 = 79,306.62/x
  3. Step 3: Cross multiply
    139,730.40x = 192,823.92 × 79,306.62
  4. Step 4: Simplify right side
    139,730.40x = 15,292,213,350.35
  5. Step 5: Solve for x
    x = 15,292,213,350.35/139,730.40
  6. Step 6: Final answer
    x = 109,440.85

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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.