Home / 120,132.72-165,772.08-69,131.88

Finding the Fourth Proportional to 120,132.72, 165,772.08 and 69,131.88

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Solution

The fourth proportional to 120,132.72, 165,772.08 and 69,131.88 is: 95,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.72 : 165,772.08 = 69,131.88 : x
  2. Step 2: Convert to fraction form
    120,132.72/165,772.08 = 69,131.88/x
  3. Step 3: Cross multiply
    120,132.72x = 165,772.08 × 69,131.88
  4. Step 4: Simplify right side
    120,132.72x = 11,460,135,541.91
  5. Step 5: Solve for x
    x = 11,460,135,541.91/120,132.72
  6. Step 6: Final answer
    x = 95,395.62

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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.