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Finding the Fourth Proportional to 144,059.72, 198,812.46 and 80,398.56

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Solution

The fourth proportional to 144,059.72, 198,812.46 and 80,398.56 is: 110,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,059.72 : 198,812.46 = 80,398.56 : x
  2. Step 2: Convert to fraction form
    144,059.72/198,812.46 = 80,398.56/x
  3. Step 3: Cross multiply
    144,059.72x = 198,812.46 × 80,398.56
  4. Step 4: Simplify right side
    144,059.72x = 15,984,235,494.06
  5. Step 5: Solve for x
    x = 15,984,235,494.06/144,059.72
  6. Step 6: Final answer
    x = 110,955.62

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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.