Home / 126,921.68-190,320.12-52,021.52

Finding the Fourth Proportional to 126,921.68, 190,320.12 and 52,021.52

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Solution

The fourth proportional to 126,921.68, 190,320.12 and 52,021.52 is: 78,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,921.68 : 190,320.12 = 52,021.52 : x
  2. Step 2: Convert to fraction form
    126,921.68/190,320.12 = 52,021.52/x
  3. Step 3: Cross multiply
    126,921.68x = 190,320.12 × 52,021.52
  4. Step 4: Simplify right side
    126,921.68x = 9,900,741,928.98
  5. Step 5: Solve for x
    x = 9,900,741,928.98/126,921.68
  6. Step 6: Final answer
    x = 78,006.70

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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.