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Finding the Fourth Proportional to 99,230.92, 136,940.82 and 54,521.80

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Solution

The fourth proportional to 99,230.92, 136,940.82 and 54,521.80 is: 75,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,230.92 : 136,940.82 = 54,521.80 : x
  2. Step 2: Convert to fraction form
    99,230.92/136,940.82 = 54,521.80/x
  3. Step 3: Cross multiply
    99,230.92x = 136,940.82 × 54,521.80
  4. Step 4: Simplify right side
    99,230.92x = 7,466,259,999.88
  5. Step 5: Solve for x
    x = 7,466,259,999.88/99,230.92
  6. Step 6: Final answer
    x = 75,241.27

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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.