Home / 126,243.57-174,279.26-78,512.30

Finding the Fourth Proportional to 126,243.57, 174,279.26 and 78,512.30

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Solution

The fourth proportional to 126,243.57, 174,279.26 and 78,512.30 is: 108,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,243.57 : 174,279.26 = 78,512.30 : x
  2. Step 2: Convert to fraction form
    126,243.57/174,279.26 = 78,512.30/x
  3. Step 3: Cross multiply
    126,243.57x = 174,279.26 × 78,512.30
  4. Step 4: Simplify right side
    126,243.57x = 13,683,065,544.90
  5. Step 5: Solve for x
    x = 13,683,065,544.90/126,243.57
  6. Step 6: Final answer
    x = 108,386.24

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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.