Home / 121,687.20-182,171.38-89,886.09

Finding the Fourth Proportional to 121,687.20, 182,171.38 and 89,886.09

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Solution

The fourth proportional to 121,687.20, 182,171.38 and 89,886.09 is: 134,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,687.20 : 182,171.38 = 89,886.09 : x
  2. Step 2: Convert to fraction form
    121,687.20/182,171.38 = 89,886.09/x
  3. Step 3: Cross multiply
    121,687.20x = 182,171.38 × 89,886.09
  4. Step 4: Simplify right side
    121,687.20x = 16,374,673,058.10
  5. Step 5: Solve for x
    x = 16,374,673,058.10/121,687.20
  6. Step 6: Final answer
    x = 134,563.64

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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.