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Finding the Fourth Proportional to 127,243.80, 190,817.10 and 38,467.80

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Solution

The fourth proportional to 127,243.80, 190,817.10 and 38,467.80 is: 57,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,243.80 : 190,817.10 = 38,467.80 : x
  2. Step 2: Convert to fraction form
    127,243.80/190,817.10 = 38,467.80/x
  3. Step 3: Cross multiply
    127,243.80x = 190,817.10 × 38,467.80
  4. Step 4: Simplify right side
    127,243.80x = 7,340,314,039.38
  5. Step 5: Solve for x
    x = 7,340,314,039.38/127,243.80
  6. Step 6: Final answer
    x = 57,687.01

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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.