Home / 113,811.76-156,963.83-68,481.28

Finding the Fourth Proportional to 113,811.76, 156,963.83 and 68,481.28

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Solution

The fourth proportional to 113,811.76, 156,963.83 and 68,481.28 is: 94,446.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,811.76 : 156,963.83 = 68,481.28 : x
  2. Step 2: Convert to fraction form
    113,811.76/156,963.83 = 68,481.28/x
  3. Step 3: Cross multiply
    113,811.76x = 156,963.83 × 68,481.28
  4. Step 4: Simplify right side
    113,811.76x = 10,749,083,992.10
  5. Step 5: Solve for x
    x = 10,749,083,992.10/113,811.76
  6. Step 6: Final answer
    x = 94,446.16

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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.