Home / 126,219.42-189,339.54-90,845.38

Finding the Fourth Proportional to 126,219.42, 189,339.54 and 90,845.38

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Solution

The fourth proportional to 126,219.42, 189,339.54 and 90,845.38 is: 136,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,219.42 : 189,339.54 = 90,845.38 : x
  2. Step 2: Convert to fraction form
    126,219.42/189,339.54 = 90,845.38/x
  3. Step 3: Cross multiply
    126,219.42x = 189,339.54 × 90,845.38
  4. Step 4: Simplify right side
    126,219.42x = 17,200,622,460.33
  5. Step 5: Solve for x
    x = 17,200,622,460.33/126,219.42
  6. Step 6: Final answer
    x = 136,275.56

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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.