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Finding the Fourth Proportional to 143,879.60, 198,544.56 and 80,213.60

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Solution

The fourth proportional to 143,879.60, 198,544.56 and 80,213.60 is: 110,689.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.60 : 198,544.56 = 80,213.60 : x
  2. Step 2: Convert to fraction form
    143,879.60/198,544.56 = 80,213.60/x
  3. Step 3: Cross multiply
    143,879.60x = 198,544.56 × 80,213.60
  4. Step 4: Simplify right side
    143,879.60x = 15,925,973,918.02
  5. Step 5: Solve for x
    x = 15,925,973,918.02/143,879.60
  6. Step 6: Final answer
    x = 110,689.59

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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.