Home / 126,628.66-174,782.10-78,853.78

Finding the Fourth Proportional to 126,628.66, 174,782.10 and 78,853.78

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Solution

The fourth proportional to 126,628.66, 174,782.10 and 78,853.78 is: 108,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,628.66 : 174,782.10 = 78,853.78 : x
  2. Step 2: Convert to fraction form
    126,628.66/174,782.10 = 78,853.78/x
  3. Step 3: Cross multiply
    126,628.66x = 174,782.10 × 78,853.78
  4. Step 4: Simplify right side
    126,628.66x = 13,782,229,261.34
  5. Step 5: Solve for x
    x = 13,782,229,261.34/126,628.66
  6. Step 6: Final answer
    x = 108,839.73

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1.5x scale

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.