Home / 126,116.44-174,121.74-78,434.68

Finding the Fourth Proportional to 126,116.44, 174,121.74 and 78,434.68

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Solution

The fourth proportional to 126,116.44, 174,121.74 and 78,434.68 is: 108,290.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,116.44 : 174,121.74 = 78,434.68 : x
  2. Step 2: Convert to fraction form
    126,116.44/174,121.74 = 78,434.68/x
  3. Step 3: Cross multiply
    126,116.44x = 174,121.74 × 78,434.68
  4. Step 4: Simplify right side
    126,116.44x = 13,657,182,957.94
  5. Step 5: Solve for x
    x = 13,657,182,957.94/126,116.44
  6. Step 6: Final answer
    x = 108,290.27

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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.