Home / 113,198.11-169,358.14-81,680.74

Finding the Fourth Proportional to 113,198.11, 169,358.14 and 81,680.74

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Solution

The fourth proportional to 113,198.11, 169,358.14 and 81,680.74 is: 122,204.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,198.11 : 169,358.14 = 81,680.74 : x
  2. Step 2: Convert to fraction form
    113,198.11/169,358.14 = 81,680.74/x
  3. Step 3: Cross multiply
    113,198.11x = 169,358.14 × 81,680.74
  4. Step 4: Simplify right side
    113,198.11x = 13,833,298,200.22
  5. Step 5: Solve for x
    x = 13,833,298,200.22/113,198.11
  6. Step 6: Final answer
    x = 122,204.32

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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.