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Finding the Fourth Proportional to 99,668.38, 149,463.69 and 43,525.66

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Solution

The fourth proportional to 99,668.38, 149,463.69 and 43,525.66 is: 65,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,668.38 : 149,463.69 = 43,525.66 : x
  2. Step 2: Convert to fraction form
    99,668.38/149,463.69 = 43,525.66/x
  3. Step 3: Cross multiply
    99,668.38x = 149,463.69 × 43,525.66
  4. Step 4: Simplify right side
    99,668.38x = 6,505,505,753.29
  5. Step 5: Solve for x
    x = 6,505,505,753.29/99,668.38
  6. Step 6: Final answer
    x = 65,271.51

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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.