Home / 143,582.38-198,143.69-79,918.81

Finding the Fourth Proportional to 143,582.38, 198,143.69 and 79,918.81

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Solution

The fourth proportional to 143,582.38, 198,143.69 and 79,918.81 is: 110,287.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,582.38 : 198,143.69 = 79,918.81 : x
  2. Step 2: Convert to fraction form
    143,582.38/198,143.69 = 79,918.81/x
  3. Step 3: Cross multiply
    143,582.38x = 198,143.69 × 79,918.81
  4. Step 4: Simplify right side
    143,582.38x = 15,835,407,913.81
  5. Step 5: Solve for x
    x = 15,835,407,913.81/143,582.38
  6. Step 6: Final answer
    x = 110,287.96

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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.