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Finding the Fourth Proportional to 144,654.56, 199,630.80 and 80,988.56

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Solution

The fourth proportional to 144,654.56, 199,630.80 and 80,988.56 is: 111,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,654.56 : 199,630.80 = 80,988.56 : x
  2. Step 2: Convert to fraction form
    144,654.56/199,630.80 = 80,988.56/x
  3. Step 3: Cross multiply
    144,654.56x = 199,630.80 × 80,988.56
  4. Step 4: Simplify right side
    144,654.56x = 16,167,811,023.65
  5. Step 5: Solve for x
    x = 16,167,811,023.65/144,654.56
  6. Step 6: Final answer
    x = 111,768.42

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1.5x scale

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.