Home / 143,283.12-197,729.28-79,619.58

Finding the Fourth Proportional to 143,283.12, 197,729.28 and 79,619.58

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Solution

The fourth proportional to 143,283.12, 197,729.28 and 79,619.58 is: 109,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,283.12 : 197,729.28 = 79,619.58 : x
  2. Step 2: Convert to fraction form
    143,283.12/197,729.28 = 79,619.58/x
  3. Step 3: Cross multiply
    143,283.12x = 197,729.28 × 79,619.58
  4. Step 4: Simplify right side
    143,283.12x = 15,743,122,227.30
  5. Step 5: Solve for x
    x = 15,743,122,227.30/143,283.12
  6. Step 6: Final answer
    x = 109,874.23

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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.