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Finding the Fourth Proportional to 99,755.29, 149,633.10 and 79,891.12

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Solution

The fourth proportional to 99,755.29, 149,633.10 and 79,891.12 is: 119,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755.29 : 149,633.10 = 79,891.12 : x
  2. Step 2: Convert to fraction form
    99,755.29/149,633.10 = 79,891.12/x
  3. Step 3: Cross multiply
    99,755.29x = 149,633.10 × 79,891.12
  4. Step 4: Simplify right side
    99,755.29x = 11,954,356,434.71
  5. Step 5: Solve for x
    x = 11,954,356,434.71/99,755.29
  6. Step 6: Final answer
    x = 119,836.82

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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.