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Finding the Fourth Proportional to 171,054.20, 256,581.30 and 168,138.20

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Solution

The fourth proportional to 171,054.20, 256,581.30 and 168,138.20 is: 252,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,054.20 : 256,581.30 = 168,138.20 : x
  2. Step 2: Convert to fraction form
    171,054.20/256,581.30 = 168,138.20/x
  3. Step 3: Cross multiply
    171,054.20x = 256,581.30 × 168,138.20
  4. Step 4: Simplify right side
    171,054.20x = 43,141,117,935.66
  5. Step 5: Solve for x
    x = 43,141,117,935.66/171,054.20
  6. Step 6: Final answer
    x = 252,207.30

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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.