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Finding the Fourth Proportional to 99,908.70, 149,841.45 and 43,748.70

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Solution

The fourth proportional to 99,908.70, 149,841.45 and 43,748.70 is: 65,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908.70 : 149,841.45 = 43,748.70 : x
  2. Step 2: Convert to fraction form
    99,908.70/149,841.45 = 43,748.70/x
  3. Step 3: Cross multiply
    99,908.70x = 149,841.45 × 43,748.70
  4. Step 4: Simplify right side
    99,908.70x = 6,555,368,643.62
  5. Step 5: Solve for x
    x = 6,555,368,643.62/99,908.70
  6. Step 6: Final answer
    x = 65,613.59

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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.