Home / 120,335.92-166,061.58-66,619.78

Finding the Fourth Proportional to 120,335.92, 166,061.58 and 66,619.78

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Solution

The fourth proportional to 120,335.92, 166,061.58 and 66,619.78 is: 91,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,335.92 : 166,061.58 = 66,619.78 : x
  2. Step 2: Convert to fraction form
    120,335.92/166,061.58 = 66,619.78/x
  3. Step 3: Cross multiply
    120,335.92x = 166,061.58 × 66,619.78
  4. Step 4: Simplify right side
    120,335.92x = 11,062,985,926.05
  5. Step 5: Solve for x
    x = 11,062,985,926.05/120,335.92
  6. Step 6: Final answer
    x = 91,934.19

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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.