Home / 139,729.80-192,820.26-79,306.02

Finding the Fourth Proportional to 139,729.80, 192,820.26 and 79,306.02

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Solution

The fourth proportional to 139,729.80, 192,820.26 and 79,306.02 is: 109,438.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,729.80 : 192,820.26 = 79,306.02 : x
  2. Step 2: Convert to fraction form
    139,729.80/192,820.26 = 79,306.02/x
  3. Step 3: Cross multiply
    139,729.80x = 192,820.26 × 79,306.02
  4. Step 4: Simplify right side
    139,729.80x = 15,291,807,395.97
  5. Step 5: Solve for x
    x = 15,291,807,395.97/139,729.80
  6. Step 6: Final answer
    x = 109,438.41

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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.