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Finding the Fourth Proportional to 99,805.55, 137,732.01 and 54,484.54

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Solution

The fourth proportional to 99,805.55, 137,732.01 and 54,484.54 is: 75,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,805.55 : 137,732.01 = 54,484.54 : x
  2. Step 2: Convert to fraction form
    99,805.55/137,732.01 = 54,484.54/x
  3. Step 3: Cross multiply
    99,805.55x = 137,732.01 × 54,484.54
  4. Step 4: Simplify right side
    99,805.55x = 7,504,265,208.13
  5. Step 5: Solve for x
    x = 7,504,265,208.13/99,805.55
  6. Step 6: Final answer
    x = 75,188.86

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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.