Home / 129,781.10-194,736.45-73,664.30

Finding the Fourth Proportional to 129,781.10, 194,736.45 and 73,664.30

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Solution

The fourth proportional to 129,781.10, 194,736.45 and 73,664.30 is: 110,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,781.10 : 194,736.45 = 73,664.30 : x
  2. Step 2: Convert to fraction form
    129,781.10/194,736.45 = 73,664.30/x
  3. Step 3: Cross multiply
    129,781.10x = 194,736.45 × 73,664.30
  4. Step 4: Simplify right side
    129,781.10x = 14,345,124,273.74
  5. Step 5: Solve for x
    x = 14,345,124,273.74/129,781.10
  6. Step 6: Final answer
    x = 110,533.23

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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.