Home / 194,042.20-290,480.10-115,115.80

Finding the Fourth Proportional to 194,042.20, 290,480.10 and 115,115.80

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Solution

The fourth proportional to 194,042.20, 290,480.10 and 115,115.80 is: 172,327.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,042.20 : 290,480.10 = 115,115.80 : x
  2. Step 2: Convert to fraction form
    194,042.20/290,480.10 = 115,115.80/x
  3. Step 3: Cross multiply
    194,042.20x = 290,480.10 × 115,115.80
  4. Step 4: Simplify right side
    194,042.20x = 33,438,849,095.58
  5. Step 5: Solve for x
    x = 33,438,849,095.58/194,042.20
  6. Step 6: Final answer
    x = 172,327.72

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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.