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Finding the Fourth Proportional to 99,652.75, 137,520.80 and 54,940.75

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Solution

The fourth proportional to 99,652.75, 137,520.80 and 54,940.75 is: 75,818.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,652.75 : 137,520.80 = 54,940.75 : x
  2. Step 2: Convert to fraction form
    99,652.75/137,520.80 = 54,940.75/x
  3. Step 3: Cross multiply
    99,652.75x = 137,520.80 × 54,940.75
  4. Step 4: Simplify right side
    99,652.75x = 7,555,495,892.60
  5. Step 5: Solve for x
    x = 7,555,495,892.60/99,652.75
  6. Step 6: Final answer
    x = 75,818.24

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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.