Home / 126,021.20-189,031.80-114,357.20

Finding the Fourth Proportional to 126,021.20, 189,031.80 and 114,357.20

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Solution

The fourth proportional to 126,021.20, 189,031.80 and 114,357.20 is: 171,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,021.20 : 189,031.80 = 114,357.20 : x
  2. Step 2: Convert to fraction form
    126,021.20/189,031.80 = 114,357.20/x
  3. Step 3: Cross multiply
    126,021.20x = 189,031.80 × 114,357.20
  4. Step 4: Simplify right side
    126,021.20x = 21,617,147,358.96
  5. Step 5: Solve for x
    x = 21,617,147,358.96/126,021.20
  6. Step 6: Final answer
    x = 171,535.80

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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.