Home / 120,862.28-166,743.42-89,106.68

Finding the Fourth Proportional to 120,862.28, 166,743.42 and 89,106.68

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Solution

The fourth proportional to 120,862.28, 166,743.42 and 89,106.68 is: 122,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862.28 : 166,743.42 = 89,106.68 : x
  2. Step 2: Convert to fraction form
    120,862.28/166,743.42 = 89,106.68/x
  3. Step 3: Cross multiply
    120,862.28x = 166,743.42 × 89,106.68
  4. Step 4: Simplify right side
    120,862.28x = 14,857,952,568.05
  5. Step 5: Solve for x
    x = 14,857,952,568.05/120,862.28
  6. Step 6: Final answer
    x = 122,932.92

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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.