Home / 112,428.20-168,559.28-68,045.20

Finding the Fourth Proportional to 112,428.20, 168,559.28 and 68,045.20

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Solution

The fourth proportional to 112,428.20, 168,559.28 and 68,045.20 is: 102,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,428.20 : 168,559.28 = 68,045.20 : x
  2. Step 2: Convert to fraction form
    112,428.20/168,559.28 = 68,045.20/x
  3. Step 3: Cross multiply
    112,428.20x = 168,559.28 × 68,045.20
  4. Step 4: Simplify right side
    112,428.20x = 11,469,649,919.46
  5. Step 5: Solve for x
    x = 11,469,649,919.46/112,428.20
  6. Step 6: Final answer
    x = 102,017.55

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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.