Home / 126,028.40-189,042.60-102,408.80

Finding the Fourth Proportional to 126,028.40, 189,042.60 and 102,408.80

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Solution

The fourth proportional to 126,028.40, 189,042.60 and 102,408.80 is: 153,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,028.40 : 189,042.60 = 102,408.80 : x
  2. Step 2: Convert to fraction form
    126,028.40/189,042.60 = 102,408.80/x
  3. Step 3: Cross multiply
    126,028.40x = 189,042.60 × 102,408.80
  4. Step 4: Simplify right side
    126,028.40x = 19,359,625,814.88
  5. Step 5: Solve for x
    x = 19,359,625,814.88/126,028.40
  6. Step 6: Final answer
    x = 153,613.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.