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Finding the Fourth Proportional to 185,419, 255,878.22 and 100,536.04

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Solution

The fourth proportional to 185,419, 255,878.22 and 100,536.04 is: 138,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,419 : 255,878.22 = 100,536.04 : x
  2. Step 2: Convert to fraction form
    185,419/255,878.22 = 100,536.04/x
  3. Step 3: Cross multiply
    185,419x = 255,878.22 × 100,536.04
  4. Step 4: Simplify right side
    185,419x = 25,724,982,961.05
  5. Step 5: Solve for x
    x = 25,724,982,961.05/185,419
  6. Step 6: Final answer
    x = 138,739.74

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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.