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Finding the Fourth Proportional to 99,901.12, 149,851.12 and 40,736.56

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Solution

The fourth proportional to 99,901.12, 149,851.12 and 40,736.56 is: 61,104.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,901.12 : 149,851.12 = 40,736.56 : x
  2. Step 2: Convert to fraction form
    99,901.12/149,851.12 = 40,736.56/x
  3. Step 3: Cross multiply
    99,901.12x = 149,851.12 × 40,736.56
  4. Step 4: Simplify right side
    99,901.12x = 6,104,419,140.95
  5. Step 5: Solve for x
    x = 6,104,419,140.95/99,901.12
  6. Step 6: Final answer
    x = 61,104.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.