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Finding the Fourth Proportional to 171,108.48, 256,663.20 and 100,891.20

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Solution

The fourth proportional to 171,108.48, 256,663.20 and 100,891.20 is: 151,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,108.48 : 256,663.20 = 100,891.20 : x
  2. Step 2: Convert to fraction form
    171,108.48/256,663.20 = 100,891.20/x
  3. Step 3: Cross multiply
    171,108.48x = 256,663.20 × 100,891.20
  4. Step 4: Simplify right side
    171,108.48x = 25,895,058,243.84
  5. Step 5: Solve for x
    x = 25,895,058,243.84/171,108.48
  6. Step 6: Final answer
    x = 151,337.08

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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.