Home / 127,418.11-191,122.31-38,668.03

Finding the Fourth Proportional to 127,418.11, 191,122.31 and 38,668.03

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Solution

The fourth proportional to 127,418.11, 191,122.31 and 38,668.03 is: 58,000.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,418.11 : 191,122.31 = 38,668.03 : x
  2. Step 2: Convert to fraction form
    127,418.11/191,122.31 = 38,668.03/x
  3. Step 3: Cross multiply
    127,418.11x = 191,122.31 × 38,668.03
  4. Step 4: Simplify right side
    127,418.11x = 7,390,323,023.41
  5. Step 5: Solve for x
    x = 7,390,323,023.41/127,418.11
  6. Step 6: Final answer
    x = 58,000.57

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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.