Home / 126,819.18-190,222.85-51,920.81

Finding the Fourth Proportional to 126,819.18, 190,222.85 and 51,920.81

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Solution

The fourth proportional to 126,819.18, 190,222.85 and 51,920.81 is: 77,878.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,819.18 : 190,222.85 = 51,920.81 : x
  2. Step 2: Convert to fraction form
    126,819.18/190,222.85 = 51,920.81/x
  3. Step 3: Cross multiply
    126,819.18x = 190,222.85 × 51,920.81
  4. Step 4: Simplify right side
    126,819.18x = 9,876,524,928.07
  5. Step 5: Solve for x
    x = 9,876,524,928.07/126,819.18
  6. Step 6: Final answer
    x = 77,878.79

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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.