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Finding the Fourth Proportional to 159,939, 220,735.26 and 92,871

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Solution

The fourth proportional to 159,939, 220,735.26 and 92,871 is: 128,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,939 : 220,735.26 = 92,871 : x
  2. Step 2: Convert to fraction form
    159,939/220,735.26 = 92,871/x
  3. Step 3: Cross multiply
    159,939x = 220,735.26 × 92,871
  4. Step 4: Simplify right side
    159,939x = 20,499,904,331.46
  5. Step 5: Solve for x
    x = 20,499,904,331.46/159,939
  6. Step 6: Final answer
    x = 128,173.27

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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.