Home / 121,775.20-168,049.28-68,060.15

Finding the Fourth Proportional to 121,775.20, 168,049.28 and 68,060.15

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Solution

The fourth proportional to 121,775.20, 168,049.28 and 68,060.15 is: 93,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,775.20 : 168,049.28 = 68,060.15 : x
  2. Step 2: Convert to fraction form
    121,775.20/168,049.28 = 68,060.15/x
  3. Step 3: Cross multiply
    121,775.20x = 168,049.28 × 68,060.15
  4. Step 4: Simplify right side
    121,775.20x = 11,437,459,164.28
  5. Step 5: Solve for x
    x = 11,437,459,164.28/121,775.20
  6. Step 6: Final answer
    x = 93,922.73

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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.