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Finding the Fourth Proportional to 172,727.08, 238,363.86 and 100,144.08

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Solution

The fourth proportional to 172,727.08, 238,363.86 and 100,144.08 is: 138,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,727.08 : 238,363.86 = 100,144.08 : x
  2. Step 2: Convert to fraction form
    172,727.08/238,363.86 = 100,144.08/x
  3. Step 3: Cross multiply
    172,727.08x = 238,363.86 × 100,144.08
  4. Step 4: Simplify right side
    172,727.08x = 23,870,729,464.95
  5. Step 5: Solve for x
    x = 23,870,729,464.95/172,727.08
  6. Step 6: Final answer
    x = 138,199.11

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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.