Home / 139,236.24-192,099.42-78,800.52

Finding the Fourth Proportional to 139,236.24, 192,099.42 and 78,800.52

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Solution

The fourth proportional to 139,236.24, 192,099.42 and 78,800.52 is: 108,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236.24 : 192,099.42 = 78,800.52 : x
  2. Step 2: Convert to fraction form
    139,236.24/192,099.42 = 78,800.52/x
  3. Step 3: Cross multiply
    139,236.24x = 192,099.42 × 78,800.52
  4. Step 4: Simplify right side
    139,236.24x = 15,137,534,187.70
  5. Step 5: Solve for x
    x = 15,137,534,187.70/139,236.24
  6. Step 6: Final answer
    x = 108,718.35

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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.