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Finding the Fourth Proportional to 159,908, 220,692.48 and 92,840

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Solution

The fourth proportional to 159,908, 220,692.48 and 92,840 is: 128,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,908 : 220,692.48 = 92,840 : x
  2. Step 2: Convert to fraction form
    159,908/220,692.48 = 92,840/x
  3. Step 3: Cross multiply
    159,908x = 220,692.48 × 92,840
  4. Step 4: Simplify right side
    159,908x = 20,489,089,843.20
  5. Step 5: Solve for x
    x = 20,489,089,843.20/159,908
  6. Step 6: Final answer
    x = 128,130.49

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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.