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Finding the Fourth Proportional to 126,969.72, 174,819.22 and 107,809.17

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Solution

The fourth proportional to 126,969.72, 174,819.22 and 107,809.17 is: 148,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,969.72 : 174,819.22 = 107,809.17 : x
  2. Step 2: Convert to fraction form
    126,969.72/174,819.22 = 107,809.17/x
  3. Step 3: Cross multiply
    126,969.72x = 174,819.22 × 107,809.17
  4. Step 4: Simplify right side
    126,969.72x = 18,847,115,008.25
  5. Step 5: Solve for x
    x = 18,847,115,008.25/126,969.72
  6. Step 6: Final answer
    x = 148,437.87

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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.