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Finding the Fourth Proportional to 99,650.25, 137,517.35 and 54,938.25

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Solution

The fourth proportional to 99,650.25, 137,517.35 and 54,938.25 is: 75,814.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,650.25 : 137,517.35 = 54,938.25 : x
  2. Step 2: Convert to fraction form
    99,650.25/137,517.35 = 54,938.25/x
  3. Step 3: Cross multiply
    99,650.25x = 137,517.35 × 54,938.25
  4. Step 4: Simplify right side
    99,650.25x = 7,554,962,278.95
  5. Step 5: Solve for x
    x = 7,554,962,278.95/99,650.25
  6. Step 6: Final answer
    x = 75,814.79

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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.