Home / 127,418.46-191,128.30-38,672.73

Finding the Fourth Proportional to 127,418.46, 191,128.30 and 38,672.73

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Solution

The fourth proportional to 127,418.46, 191,128.30 and 38,672.73 is: 58,009.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,418.46 : 191,128.30 = 38,672.73 : x
  2. Step 2: Convert to fraction form
    127,418.46/191,128.30 = 38,672.73/x
  3. Step 3: Cross multiply
    127,418.46x = 191,128.30 × 38,672.73
  4. Step 4: Simplify right side
    127,418.46x = 7,391,453,141.26
  5. Step 5: Solve for x
    x = 7,391,453,141.26/127,418.46
  6. Step 6: Final answer
    x = 58,009.28

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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.