Home / 139,337.94-192,366.06-91,729.68

Finding the Fourth Proportional to 139,337.94, 192,366.06 and 91,729.68

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Solution

The fourth proportional to 139,337.94, 192,366.06 and 91,729.68 is: 126,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,337.94 : 192,366.06 = 91,729.68 : x
  2. Step 2: Convert to fraction form
    139,337.94/192,366.06 = 91,729.68/x
  3. Step 3: Cross multiply
    139,337.94x = 192,366.06 × 91,729.68
  4. Step 4: Simplify right side
    139,337.94x = 17,645,677,126.66
  5. Step 5: Solve for x
    x = 17,645,677,126.66/139,337.94
  6. Step 6: Final answer
    x = 126,639.43

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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.