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Finding the Fourth Proportional to 99,908.45, 149,733.49 and 74,751.11

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Solution

The fourth proportional to 99,908.45, 149,733.49 and 74,751.11 is: 112,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908.45 : 149,733.49 = 74,751.11 : x
  2. Step 2: Convert to fraction form
    99,908.45/149,733.49 = 74,751.11/x
  3. Step 3: Cross multiply
    99,908.45x = 149,733.49 × 74,751.11
  4. Step 4: Simplify right side
    99,908.45x = 11,192,744,769.13
  5. Step 5: Solve for x
    x = 11,192,744,769.13/99,908.45
  6. Step 6: Final answer
    x = 112,030.01

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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.