Home / 143,968.33-198,674.93-79,438.15

Finding the Fourth Proportional to 143,968.33, 198,674.93 and 79,438.15

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Solution

The fourth proportional to 143,968.33, 198,674.93 and 79,438.15 is: 109,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,968.33 : 198,674.93 = 79,438.15 : x
  2. Step 2: Convert to fraction form
    143,968.33/198,674.93 = 79,438.15/x
  3. Step 3: Cross multiply
    143,968.33x = 198,674.93 × 79,438.15
  4. Step 4: Simplify right side
    143,968.33x = 15,782,368,095.80
  5. Step 5: Solve for x
    x = 15,782,368,095.80/143,968.33
  6. Step 6: Final answer
    x = 109,623.89

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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.