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Finding the Fourth Proportional to 127,987.44, 176,627.52 and 71,409.84

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Solution

The fourth proportional to 127,987.44, 176,627.52 and 71,409.84 is: 98,548.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,987.44 : 176,627.52 = 71,409.84 : x
  2. Step 2: Convert to fraction form
    127,987.44/176,627.52 = 71,409.84/x
  3. Step 3: Cross multiply
    127,987.44x = 176,627.52 × 71,409.84
  4. Step 4: Simplify right side
    127,987.44x = 12,612,942,942.80
  5. Step 5: Solve for x
    x = 12,612,942,942.80/127,987.44
  6. Step 6: Final answer
    x = 98,548.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.