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Finding the Fourth Proportional to 126,940, 175,177.20 and 70,359.88

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Solution

The fourth proportional to 126,940, 175,177.20 and 70,359.88 is: 97,096.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,940 : 175,177.20 = 70,359.88 : x
  2. Step 2: Convert to fraction form
    126,940/175,177.20 = 70,359.88/x
  3. Step 3: Cross multiply
    126,940x = 175,177.20 × 70,359.88
  4. Step 4: Simplify right side
    126,940x = 12,325,446,770.74
  5. Step 5: Solve for x
    x = 12,325,446,770.74/126,940
  6. Step 6: Final answer
    x = 97,096.63

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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.