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Finding the Fourth Proportional to 136,114.80, 204,172.20 and 73,129.20

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Solution

The fourth proportional to 136,114.80, 204,172.20 and 73,129.20 is: 109,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,114.80 : 204,172.20 = 73,129.20 : x
  2. Step 2: Convert to fraction form
    136,114.80/204,172.20 = 73,129.20/x
  3. Step 3: Cross multiply
    136,114.80x = 204,172.20 × 73,129.20
  4. Step 4: Simplify right side
    136,114.80x = 14,930,949,648.24
  5. Step 5: Solve for x
    x = 14,930,949,648.24/136,114.80
  6. Step 6: Final answer
    x = 109,693.80

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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.