Home / 261,181.08-391,771.62-74,168.28

Finding the Fourth Proportional to 261,181.08, 391,771.62 and 74,168.28

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Solution

The fourth proportional to 261,181.08, 391,771.62 and 74,168.28 is: 111,252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,181.08 : 391,771.62 = 74,168.28 : x
  2. Step 2: Convert to fraction form
    261,181.08/391,771.62 = 74,168.28/x
  3. Step 3: Cross multiply
    261,181.08x = 391,771.62 × 74,168.28
  4. Step 4: Simplify right side
    261,181.08x = 29,057,027,208.21
  5. Step 5: Solve for x
    x = 29,057,027,208.21/261,181.08
  6. Step 6: Final answer
    x = 111,252.42

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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.