Home / 143,717.86-198,336.78-80,055.70

Finding the Fourth Proportional to 143,717.86, 198,336.78 and 80,055.70

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Solution

The fourth proportional to 143,717.86, 198,336.78 and 80,055.70 is: 110,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,717.86 : 198,336.78 = 80,055.70 : x
  2. Step 2: Convert to fraction form
    143,717.86/198,336.78 = 80,055.70/x
  3. Step 3: Cross multiply
    143,717.86x = 198,336.78 × 80,055.70
  4. Step 4: Simplify right side
    143,717.86x = 15,877,989,758.65
  5. Step 5: Solve for x
    x = 15,877,989,758.65/143,717.86
  6. Step 6: Final answer
    x = 110,480.28

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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.