Home / 139,231.17-192,139.20-75,568.95

Finding the Fourth Proportional to 139,231.17, 192,139.20 and 75,568.95

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Solution

The fourth proportional to 139,231.17, 192,139.20 and 75,568.95 is: 104,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,231.17 : 192,139.20 = 75,568.95 : x
  2. Step 2: Convert to fraction form
    139,231.17/192,139.20 = 75,568.95/x
  3. Step 3: Cross multiply
    139,231.17x = 192,139.20 × 75,568.95
  4. Step 4: Simplify right side
    139,231.17x = 14,519,757,597.84
  5. Step 5: Solve for x
    x = 14,519,757,597.84/139,231.17
  6. Step 6: Final answer
    x = 104,285.25

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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.