Home / 149,143.38-205,821.66-81,164.04

Finding the Fourth Proportional to 149,143.38, 205,821.66 and 81,164.04

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Solution

The fourth proportional to 149,143.38, 205,821.66 and 81,164.04 is: 112,008.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,143.38 : 205,821.66 = 81,164.04 : x
  2. Step 2: Convert to fraction form
    149,143.38/205,821.66 = 81,164.04/x
  3. Step 3: Cross multiply
    149,143.38x = 205,821.66 × 81,164.04
  4. Step 4: Simplify right side
    149,143.38x = 16,705,317,445.11
  5. Step 5: Solve for x
    x = 16,705,317,445.11/149,143.38
  6. Step 6: Final answer
    x = 112,008.44

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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.