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Finding the Fourth Proportional to 127,546.92, 191,154 and 79,495.68

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Solution

The fourth proportional to 127,546.92, 191,154 and 79,495.68 is: 119,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,546.92 : 191,154 = 79,495.68 : x
  2. Step 2: Convert to fraction form
    127,546.92/191,154 = 79,495.68/x
  3. Step 3: Cross multiply
    127,546.92x = 191,154 × 79,495.68
  4. Step 4: Simplify right side
    127,546.92x = 15,195,917,214.72
  5. Step 5: Solve for x
    x = 15,195,917,214.72/127,546.92
  6. Step 6: Final answer
    x = 119,139.82

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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.