Home / 139,259.20-192,202.24-78,833.28

Finding the Fourth Proportional to 139,259.20, 192,202.24 and 78,833.28

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Solution

The fourth proportional to 139,259.20, 192,202.24 and 78,833.28 is: 108,803.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,259.20 : 192,202.24 = 78,833.28 : x
  2. Step 2: Convert to fraction form
    139,259.20/192,202.24 = 78,833.28/x
  3. Step 3: Cross multiply
    139,259.20x = 192,202.24 × 78,833.28
  4. Step 4: Simplify right side
    139,259.20x = 15,151,933,002.55
  5. Step 5: Solve for x
    x = 15,151,933,002.55/139,259.20
  6. Step 6: Final answer
    x = 108,803.82

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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.