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Finding the Fourth Proportional to 185,247, 255,639.28 and 100,363.88

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Solution

The fourth proportional to 185,247, 255,639.28 and 100,363.88 is: 138,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,247 : 255,639.28 = 100,363.88 : x
  2. Step 2: Convert to fraction form
    185,247/255,639.28 = 100,363.88/x
  3. Step 3: Cross multiply
    185,247x = 255,639.28 × 100,363.88
  4. Step 4: Simplify right side
    185,247x = 25,656,950,021.21
  5. Step 5: Solve for x
    x = 25,656,950,021.21/185,247
  6. Step 6: Final answer
    x = 138,501.30

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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.