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Finding the Fourth Proportional to 99,843.71, 137,783.24 and 54,521.56

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Solution

The fourth proportional to 99,843.71, 137,783.24 and 54,521.56 is: 75,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,843.71 : 137,783.24 = 54,521.56 : x
  2. Step 2: Convert to fraction form
    99,843.71/137,783.24 = 54,521.56/x
  3. Step 3: Cross multiply
    99,843.71x = 137,783.24 × 54,521.56
  4. Step 4: Simplify right side
    99,843.71x = 7,512,156,497.74
  5. Step 5: Solve for x
    x = 7,512,156,497.74/99,843.71
  6. Step 6: Final answer
    x = 75,239.16

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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.