Home / 143,819.49-198,471.81-80,161.32

Finding the Fourth Proportional to 143,819.49, 198,471.81 and 80,161.32

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Solution

The fourth proportional to 143,819.49, 198,471.81 and 80,161.32 is: 110,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,819.49 : 198,471.81 = 80,161.32 : x
  2. Step 2: Convert to fraction form
    143,819.49/198,471.81 = 80,161.32/x
  3. Step 3: Cross multiply
    143,819.49x = 198,471.81 × 80,161.32
  4. Step 4: Simplify right side
    143,819.49x = 15,909,762,272.39
  5. Step 5: Solve for x
    x = 15,909,762,272.39/143,819.49
  6. Step 6: Final answer
    x = 110,623.13

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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.