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Finding the Fourth Proportional to 99,843.49, 137,786.34 and 54,521.79

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Solution

The fourth proportional to 99,843.49, 137,786.34 and 54,521.79 is: 75,241.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,843.49 : 137,786.34 = 54,521.79 : x
  2. Step 2: Convert to fraction form
    99,843.49/137,786.34 = 54,521.79/x
  3. Step 3: Cross multiply
    99,843.49x = 137,786.34 × 54,521.79
  4. Step 4: Simplify right side
    99,843.49x = 7,512,357,894.35
  5. Step 5: Solve for x
    x = 7,512,357,894.35/99,843.49
  6. Step 6: Final answer
    x = 75,241.34

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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.