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Finding the Fourth Proportional to 126,291.69, 174,279.87 and 68,929.11

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Solution

The fourth proportional to 126,291.69, 174,279.87 and 68,929.11 is: 95,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,291.69 : 174,279.87 = 68,929.11 : x
  2. Step 2: Convert to fraction form
    126,291.69/174,279.87 = 68,929.11/x
  3. Step 3: Cross multiply
    126,291.69x = 174,279.87 × 68,929.11
  4. Step 4: Simplify right side
    126,291.69x = 12,012,956,330.02
  5. Step 5: Solve for x
    x = 12,012,956,330.02/126,291.69
  6. Step 6: Final answer
    x = 95,120.72

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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.