Home / 126,255.51-174,249.23-87,990.30

Finding the Fourth Proportional to 126,255.51, 174,249.23 and 87,990.30

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Solution

The fourth proportional to 126,255.51, 174,249.23 and 87,990.30 is: 121,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,255.51 : 174,249.23 = 87,990.30 : x
  2. Step 2: Convert to fraction form
    126,255.51/174,249.23 = 87,990.30/x
  3. Step 3: Cross multiply
    126,255.51x = 174,249.23 × 87,990.30
  4. Step 4: Simplify right side
    126,255.51x = 15,332,241,582.52
  5. Step 5: Solve for x
    x = 15,332,241,582.52/126,255.51
  6. Step 6: Final answer
    x = 121,438.20

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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.