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Finding the Fourth Proportional to 107,685.92, 161,133.87 and 89,872.58

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Solution

The fourth proportional to 107,685.92, 161,133.87 and 89,872.58 is: 134,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,685.92 : 161,133.87 = 89,872.58 : x
  2. Step 2: Convert to fraction form
    107,685.92/161,133.87 = 89,872.58/x
  3. Step 3: Cross multiply
    107,685.92x = 161,133.87 × 89,872.58
  4. Step 4: Simplify right side
    107,685.92x = 14,481,516,622.28
  5. Step 5: Solve for x
    x = 14,481,516,622.28/107,685.92
  6. Step 6: Final answer
    x = 134,479.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.