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Finding the Fourth Proportional to 144,270.72, 199,098 and 80,611.20

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Solution

The fourth proportional to 144,270.72, 199,098 and 80,611.20 is: 111,245.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,270.72 : 199,098 = 80,611.20 : x
  2. Step 2: Convert to fraction form
    144,270.72/199,098 = 80,611.20/x
  3. Step 3: Cross multiply
    144,270.72x = 199,098 × 80,611.20
  4. Step 4: Simplify right side
    144,270.72x = 16,049,528,697.60
  5. Step 5: Solve for x
    x = 16,049,528,697.60/144,270.72
  6. Step 6: Final answer
    x = 111,245.92

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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.