Home / 149,144.38-205,823.04-81,165.04

Finding the Fourth Proportional to 149,144.38, 205,823.04 and 81,165.04

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Solution

The fourth proportional to 149,144.38, 205,823.04 and 81,165.04 is: 112,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,144.38 : 205,823.04 = 81,165.04 : x
  2. Step 2: Convert to fraction form
    149,144.38/205,823.04 = 81,165.04/x
  3. Step 3: Cross multiply
    149,144.38x = 205,823.04 × 81,165.04
  4. Step 4: Simplify right side
    149,144.38x = 16,705,635,274.52
  5. Step 5: Solve for x
    x = 16,705,635,274.52/149,144.38
  6. Step 6: Final answer
    x = 112,009.82

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1.5x scale

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.