Home / 100,694.48-138,951.25-55,371.74

Finding the Fourth Proportional to 100,694.48, 138,951.25 and 55,371.74

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Solution

The fourth proportional to 100,694.48, 138,951.25 and 55,371.74 is: 76,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,694.48 : 138,951.25 = 55,371.74 : x
  2. Step 2: Convert to fraction form
    100,694.48/138,951.25 = 55,371.74/x
  3. Step 3: Cross multiply
    100,694.48x = 138,951.25 × 55,371.74
  4. Step 4: Simplify right side
    100,694.48x = 7,693,971,654.49
  5. Step 5: Solve for x
    x = 7,693,971,654.49/100,694.48
  6. Step 6: Final answer
    x = 76,409.07

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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.