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Finding the Fourth Proportional to 127,201.62, 190,806.48 and 63,987.20

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Solution

The fourth proportional to 127,201.62, 190,806.48 and 63,987.20 is: 95,982.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,201.62 : 190,806.48 = 63,987.20 : x
  2. Step 2: Convert to fraction form
    127,201.62/190,806.48 = 63,987.20/x
  3. Step 3: Cross multiply
    127,201.62x = 190,806.48 × 63,987.20
  4. Step 4: Simplify right side
    127,201.62x = 12,209,171,443.02
  5. Step 5: Solve for x
    x = 12,209,171,443.02/127,201.62
  6. Step 6: Final answer
    x = 95,982.83

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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.