Home / 126,056.40-189,120.60-76,151.76

Finding the Fourth Proportional to 126,056.40, 189,120.60 and 76,151.76

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Solution

The fourth proportional to 126,056.40, 189,120.60 and 76,151.76 is: 114,249.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,056.40 : 189,120.60 = 76,151.76 : x
  2. Step 2: Convert to fraction form
    126,056.40/189,120.60 = 76,151.76/x
  3. Step 3: Cross multiply
    126,056.40x = 189,120.60 × 76,151.76
  4. Step 4: Simplify right side
    126,056.40x = 14,401,866,542.26
  5. Step 5: Solve for x
    x = 14,401,866,542.26/126,056.40
  6. Step 6: Final answer
    x = 114,249.39

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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.