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Finding the Fourth Proportional to 126,751.50, 174,917.34 and 70,171.38

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Solution

The fourth proportional to 126,751.50, 174,917.34 and 70,171.38 is: 96,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,751.50 : 174,917.34 = 70,171.38 : x
  2. Step 2: Convert to fraction form
    126,751.50/174,917.34 = 70,171.38/x
  3. Step 3: Cross multiply
    126,751.50x = 174,917.34 × 70,171.38
  4. Step 4: Simplify right side
    126,751.50x = 12,274,191,133.73
  5. Step 5: Solve for x
    x = 12,274,191,133.73/126,751.50
  6. Step 6: Final answer
    x = 96,836.65

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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.