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Finding the Fourth Proportional to 91,232.45, 125,960.02 and 81,655.75

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Solution

The fourth proportional to 91,232.45, 125,960.02 and 81,655.75 is: 112,737.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,232.45 : 125,960.02 = 81,655.75 : x
  2. Step 2: Convert to fraction form
    91,232.45/125,960.02 = 81,655.75/x
  3. Step 3: Cross multiply
    91,232.45x = 125,960.02 × 81,655.75
  4. Step 4: Simplify right side
    91,232.45x = 10,285,359,179.94
  5. Step 5: Solve for x
    x = 10,285,359,179.94/91,232.45
  6. Step 6: Final answer
    x = 112,737.95

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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.