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Finding the Fourth Proportional to 171,054.70, 256,582.05 and 168,138.70

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Solution

The fourth proportional to 171,054.70, 256,582.05 and 168,138.70 is: 252,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,054.70 : 256,582.05 = 168,138.70 : x
  2. Step 2: Convert to fraction form
    171,054.70/256,582.05 = 168,138.70/x
  3. Step 3: Cross multiply
    171,054.70x = 256,582.05 × 168,138.70
  4. Step 4: Simplify right side
    171,054.70x = 43,141,372,330.34
  5. Step 5: Solve for x
    x = 43,141,372,330.34/171,054.70
  6. Step 6: Final answer
    x = 252,208.05

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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.