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Finding the Fourth Proportional to 99,887.74, 137,838.96 and 54,556.54

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Solution

The fourth proportional to 99,887.74, 137,838.96 and 54,556.54 is: 75,284.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,887.74 : 137,838.96 = 54,556.54 : x
  2. Step 2: Convert to fraction form
    99,887.74/137,838.96 = 54,556.54/x
  3. Step 3: Cross multiply
    99,887.74x = 137,838.96 × 54,556.54
  4. Step 4: Simplify right side
    99,887.74x = 7,520,016,734.80
  5. Step 5: Solve for x
    x = 7,520,016,734.80/99,887.74
  6. Step 6: Final answer
    x = 75,284.68

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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.