Home / 127,631.50-191,112.84-89,987.80

Finding the Fourth Proportional to 127,631.50, 191,112.84 and 89,987.80

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Solution

The fourth proportional to 127,631.50, 191,112.84 and 89,987.80 is: 134,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.50 : 191,112.84 = 89,987.80 : x
  2. Step 2: Convert to fraction form
    127,631.50/191,112.84 = 89,987.80/x
  3. Step 3: Cross multiply
    127,631.50x = 191,112.84 × 89,987.80
  4. Step 4: Simplify right side
    127,631.50x = 17,197,824,023.35
  5. Step 5: Solve for x
    x = 17,197,824,023.35/127,631.50
  6. Step 6: Final answer
    x = 134,745.92

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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.