Home / 126,826.80-174,855-109,112.08

Finding the Fourth Proportional to 126,826.80, 174,855 and 109,112.08

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Solution

The fourth proportional to 126,826.80, 174,855 and 109,112.08 is: 150,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,826.80 : 174,855 = 109,112.08 : x
  2. Step 2: Convert to fraction form
    126,826.80/174,855 = 109,112.08/x
  3. Step 3: Cross multiply
    126,826.80x = 174,855 × 109,112.08
  4. Step 4: Simplify right side
    126,826.80x = 19,078,792,748.40
  5. Step 5: Solve for x
    x = 19,078,792,748.40/126,826.80
  6. Step 6: Final answer
    x = 150,431.87

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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.