Home / 126,256.74-189,495.45-51,417.78

Finding the Fourth Proportional to 126,256.74, 189,495.45 and 51,417.78

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Solution

The fourth proportional to 126,256.74, 189,495.45 and 51,417.78 is: 77,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,256.74 : 189,495.45 = 51,417.78 : x
  2. Step 2: Convert to fraction form
    126,256.74/189,495.45 = 51,417.78/x
  3. Step 3: Cross multiply
    126,256.74x = 189,495.45 × 51,417.78
  4. Step 4: Simplify right side
    126,256.74x = 9,743,435,359.10
  5. Step 5: Solve for x
    x = 9,743,435,359.10/126,256.74
  6. Step 6: Final answer
    x = 77,171.61

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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.