Home / 149,373.54-206,132.89-81,391.07

Finding the Fourth Proportional to 149,373.54, 206,132.89 and 81,391.07

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Solution

The fourth proportional to 149,373.54, 206,132.89 and 81,391.07 is: 112,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,373.54 : 206,132.89 = 81,391.07 : x
  2. Step 2: Convert to fraction form
    149,373.54/206,132.89 = 81,391.07/x
  3. Step 3: Cross multiply
    149,373.54x = 206,132.89 × 81,391.07
  4. Step 4: Simplify right side
    149,373.54x = 16,777,376,479.29
  5. Step 5: Solve for x
    x = 16,777,376,479.29/149,373.54
  6. Step 6: Final answer
    x = 112,318.26

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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.