Home / 143,582.13-198,143.37-79,918.56

Finding the Fourth Proportional to 143,582.13, 198,143.37 and 79,918.56

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Solution

The fourth proportional to 143,582.13, 198,143.37 and 79,918.56 is: 110,287.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,582.13 : 198,143.37 = 79,918.56 : x
  2. Step 2: Convert to fraction form
    143,582.13/198,143.37 = 79,918.56/x
  3. Step 3: Cross multiply
    143,582.13x = 198,143.37 × 79,918.56
  4. Step 4: Simplify right side
    143,582.13x = 15,835,332,803.95
  5. Step 5: Solve for x
    x = 15,835,332,803.95/143,582.13
  6. Step 6: Final answer
    x = 110,287.63

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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.