Home / 127,987.20-191,721.60-88,588.80

Finding the Fourth Proportional to 127,987.20, 191,721.60 and 88,588.80

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Solution

The fourth proportional to 127,987.20, 191,721.60 and 88,588.80 is: 132,703.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,987.20 : 191,721.60 = 88,588.80 : x
  2. Step 2: Convert to fraction form
    127,987.20/191,721.60 = 88,588.80/x
  3. Step 3: Cross multiply
    127,987.20x = 191,721.60 × 88,588.80
  4. Step 4: Simplify right side
    127,987.20x = 16,984,386,478.08
  5. Step 5: Solve for x
    x = 16,984,386,478.08/127,987.20
  6. Step 6: Final answer
    x = 132,703.79

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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.