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Finding the Fourth Proportional to 99,222.97, 136,928.72 and 53,901.85

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Solution

The fourth proportional to 99,222.97, 136,928.72 and 53,901.85 is: 74,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,222.97 : 136,928.72 = 53,901.85 : x
  2. Step 2: Convert to fraction form
    99,222.97/136,928.72 = 53,901.85/x
  3. Step 3: Cross multiply
    99,222.97x = 136,928.72 × 53,901.85
  4. Step 4: Simplify right side
    99,222.97x = 7,380,711,326.13
  5. Step 5: Solve for x
    x = 7,380,711,326.13/99,222.97
  6. Step 6: Final answer
    x = 74,385.11

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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.