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Finding the Fourth Proportional to 126,760.80, 174,928.80 and 70,170.72

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Solution

The fourth proportional to 126,760.80, 174,928.80 and 70,170.72 is: 96,834.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,760.80 : 174,928.80 = 70,170.72 : x
  2. Step 2: Convert to fraction form
    126,760.80/174,928.80 = 70,170.72/x
  3. Step 3: Cross multiply
    126,760.80x = 174,928.80 × 70,170.72
  4. Step 4: Simplify right side
    126,760.80x = 12,274,879,844.74
  5. Step 5: Solve for x
    x = 12,274,879,844.74/126,760.80
  6. Step 6: Final answer
    x = 96,834.98

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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.