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Finding the Fourth Proportional to 172,388.04, 258,531.54 and 67,181.88

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Solution

The fourth proportional to 172,388.04, 258,531.54 and 67,181.88 is: 100,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,388.04 : 258,531.54 = 67,181.88 : x
  2. Step 2: Convert to fraction form
    172,388.04/258,531.54 = 67,181.88/x
  3. Step 3: Cross multiply
    172,388.04x = 258,531.54 × 67,181.88
  4. Step 4: Simplify right side
    172,388.04x = 17,368,634,896.50
  5. Step 5: Solve for x
    x = 17,368,634,896.50/172,388.04
  6. Step 6: Final answer
    x = 100,753.13

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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.