Home / 139,649.28-192,684.24-79,205.52

Finding the Fourth Proportional to 139,649.28, 192,684.24 and 79,205.52

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Solution

The fourth proportional to 139,649.28, 192,684.24 and 79,205.52 is: 109,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,649.28 : 192,684.24 = 79,205.52 : x
  2. Step 2: Convert to fraction form
    139,649.28/192,684.24 = 79,205.52/x
  3. Step 3: Cross multiply
    139,649.28x = 192,684.24 × 79,205.52
  4. Step 4: Simplify right side
    139,649.28x = 15,261,655,425.00
  5. Step 5: Solve for x
    x = 15,261,655,425.00/139,649.28
  6. Step 6: Final answer
    x = 109,285.60

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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.