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Finding the Fourth Proportional to 99,091.46, 136,859.78 and 65,251.22

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Solution

The fourth proportional to 99,091.46, 136,859.78 and 65,251.22 is: 90,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,091.46 : 136,859.78 = 65,251.22 : x
  2. Step 2: Convert to fraction form
    99,091.46/136,859.78 = 65,251.22/x
  3. Step 3: Cross multiply
    99,091.46x = 136,859.78 × 65,251.22
  4. Step 4: Simplify right side
    99,091.46x = 8,930,267,092.76
  5. Step 5: Solve for x
    x = 8,930,267,092.76/99,091.46
  6. Step 6: Final answer
    x = 90,121.46

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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.