Home / 108,537.20-162,708.60-71,115.20

Finding the Fourth Proportional to 108,537.20, 162,708.60 and 71,115.20

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Solution

The fourth proportional to 108,537.20, 162,708.60 and 71,115.20 is: 106,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,537.20 : 162,708.60 = 71,115.20 : x
  2. Step 2: Convert to fraction form
    108,537.20/162,708.60 = 71,115.20/x
  3. Step 3: Cross multiply
    108,537.20x = 162,708.60 × 71,115.20
  4. Step 4: Simplify right side
    108,537.20x = 11,571,054,630.72
  5. Step 5: Solve for x
    x = 11,571,054,630.72/108,537.20
  6. Step 6: Final answer
    x = 106,609.11

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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.