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Finding the Fourth Proportional to 107,864.80, 149,122.49 and 80,960.58

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Solution

The fourth proportional to 107,864.80, 149,122.49 and 80,960.58 is: 111,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,864.80 : 149,122.49 = 80,960.58 : x
  2. Step 2: Convert to fraction form
    107,864.80/149,122.49 = 80,960.58/x
  3. Step 3: Cross multiply
    107,864.80x = 149,122.49 × 80,960.58
  4. Step 4: Simplify right side
    107,864.80x = 12,073,042,876.64
  5. Step 5: Solve for x
    x = 12,073,042,876.64/107,864.80
  6. Step 6: Final answer
    x = 111,927.55

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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.