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Finding the Fourth Proportional to 194,608.80, 268,549.20 and 109,720.80

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Solution

The fourth proportional to 194,608.80, 268,549.20 and 109,720.80 is: 151,408.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,608.80 : 268,549.20 = 109,720.80 : x
  2. Step 2: Convert to fraction form
    194,608.80/268,549.20 = 109,720.80/x
  3. Step 3: Cross multiply
    194,608.80x = 268,549.20 × 109,720.80
  4. Step 4: Simplify right side
    194,608.80x = 29,465,433,063.36
  5. Step 5: Solve for x
    x = 29,465,433,063.36/194,608.80
  6. Step 6: Final answer
    x = 151,408.53

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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.