Home / 143,823.80-198,485.74-79,292.72

Finding the Fourth Proportional to 143,823.80, 198,485.74 and 79,292.72

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Solution

The fourth proportional to 143,823.80, 198,485.74 and 79,292.72 is: 109,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,823.80 : 198,485.74 = 79,292.72 : x
  2. Step 2: Convert to fraction form
    143,823.80/198,485.74 = 79,292.72/x
  3. Step 3: Cross multiply
    143,823.80x = 198,485.74 × 79,292.72
  4. Step 4: Simplify right side
    143,823.80x = 15,738,474,801.14
  5. Step 5: Solve for x
    x = 15,738,474,801.14/143,823.80
  6. Step 6: Final answer
    x = 109,428.86

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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.