Home / 127,720.89-191,581.34-38,974.86

Finding the Fourth Proportional to 127,720.89, 191,581.34 and 38,974.86

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Solution

The fourth proportional to 127,720.89, 191,581.34 and 38,974.86 is: 58,462.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.89 : 191,581.34 = 38,974.86 : x
  2. Step 2: Convert to fraction form
    127,720.89/191,581.34 = 38,974.86/x
  3. Step 3: Cross multiply
    127,720.89x = 191,581.34 × 38,974.86
  4. Step 4: Simplify right side
    127,720.89x = 7,466,855,710.24
  5. Step 5: Solve for x
    x = 7,466,855,710.24/127,720.89
  6. Step 6: Final answer
    x = 58,462.29

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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.