Home / 143,981.86-198,693.03-80,320.72

Finding the Fourth Proportional to 143,981.86, 198,693.03 and 80,320.72

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Solution

The fourth proportional to 143,981.86, 198,693.03 and 80,320.72 is: 110,841.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,981.86 : 198,693.03 = 80,320.72 : x
  2. Step 2: Convert to fraction form
    143,981.86/198,693.03 = 80,320.72/x
  3. Step 3: Cross multiply
    143,981.86x = 198,693.03 × 80,320.72
  4. Step 4: Simplify right side
    143,981.86x = 15,959,167,228.58
  5. Step 5: Solve for x
    x = 15,959,167,228.58/143,981.86
  6. Step 6: Final answer
    x = 110,841.51

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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.