Home / 126,980.52-190,397.87-38,207.76

Finding the Fourth Proportional to 126,980.52, 190,397.87 and 38,207.76

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Solution

The fourth proportional to 126,980.52, 190,397.87 and 38,207.76 is: 57,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,980.52 : 190,397.87 = 38,207.76 : x
  2. Step 2: Convert to fraction form
    126,980.52/190,397.87 = 38,207.76/x
  3. Step 3: Cross multiply
    126,980.52x = 190,397.87 × 38,207.76
  4. Step 4: Simplify right side
    126,980.52x = 7,274,676,121.47
  5. Step 5: Solve for x
    x = 7,274,676,121.47/126,980.52
  6. Step 6: Final answer
    x = 57,289.70

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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.