Home / 149,153.68-205,832.96-81,171.19

Finding the Fourth Proportional to 149,153.68, 205,832.96 and 81,171.19

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Solution

The fourth proportional to 149,153.68, 205,832.96 and 81,171.19 is: 112,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,153.68 : 205,832.96 = 81,171.19 : x
  2. Step 2: Convert to fraction form
    149,153.68/205,832.96 = 81,171.19/x
  3. Step 3: Cross multiply
    149,153.68x = 205,832.96 × 81,171.19
  4. Step 4: Simplify right side
    149,153.68x = 16,707,706,304.42
  5. Step 5: Solve for x
    x = 16,707,706,304.42/149,153.68
  6. Step 6: Final answer
    x = 112,016.72

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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.