Home / 127,540.28-191,215.20-87,984.56

Finding the Fourth Proportional to 127,540.28, 191,215.20 and 87,984.56

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Solution

The fourth proportional to 127,540.28, 191,215.20 and 87,984.56 is: 131,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,540.28 : 191,215.20 = 87,984.56 : x
  2. Step 2: Convert to fraction form
    127,540.28/191,215.20 = 87,984.56/x
  3. Step 3: Cross multiply
    127,540.28x = 191,215.20 × 87,984.56
  4. Step 4: Simplify right side
    127,540.28x = 16,823,985,237.31
  5. Step 5: Solve for x
    x = 16,823,985,237.31/127,540.28
  6. Step 6: Final answer
    x = 131,911.15

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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.