Home / 113,722.40-156,976.08-68,425.76

Finding the Fourth Proportional to 113,722.40, 156,976.08 and 68,425.76

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Solution

The fourth proportional to 113,722.40, 156,976.08 and 68,425.76 is: 94,451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,722.40 : 156,976.08 = 68,425.76 : x
  2. Step 2: Convert to fraction form
    113,722.40/156,976.08 = 68,425.76/x
  3. Step 3: Cross multiply
    113,722.40x = 156,976.08 × 68,425.76
  4. Step 4: Simplify right side
    113,722.40x = 10,741,207,575.82
  5. Step 5: Solve for x
    x = 10,741,207,575.82/113,722.40
  6. Step 6: Final answer
    x = 94,451.12

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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.