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Finding the Fourth Proportional to 99,805.99, 137,732.65 and 54,484.97

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Solution

The fourth proportional to 99,805.99, 137,732.65 and 54,484.97 is: 75,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,805.99 : 137,732.65 = 54,484.97 : x
  2. Step 2: Convert to fraction form
    99,805.99/137,732.65 = 54,484.97/x
  3. Step 3: Cross multiply
    99,805.99x = 137,732.65 × 54,484.97
  4. Step 4: Simplify right side
    99,805.99x = 7,504,359,559.62
  5. Step 5: Solve for x
    x = 7,504,359,559.62/99,805.99
  6. Step 6: Final answer
    x = 75,189.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.