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Finding the Fourth Proportional to 92,009.20, 137,722.20 and 65,765.20

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Solution

The fourth proportional to 92,009.20, 137,722.20 and 65,765.20 is: 98,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,009.20 : 137,722.20 = 65,765.20 : x
  2. Step 2: Convert to fraction form
    92,009.20/137,722.20 = 65,765.20/x
  3. Step 3: Cross multiply
    92,009.20x = 137,722.20 × 65,765.20
  4. Step 4: Simplify right side
    92,009.20x = 9,057,328,027.44
  5. Step 5: Solve for x
    x = 9,057,328,027.44/92,009.20
  6. Step 6: Final answer
    x = 98,439.37

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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.