Home / 143,797.12-198,431.30-79,263.53

Finding the Fourth Proportional to 143,797.12, 198,431.30 and 79,263.53

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Solution

The fourth proportional to 143,797.12, 198,431.30 and 79,263.53 is: 109,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,797.12 : 198,431.30 = 79,263.53 : x
  2. Step 2: Convert to fraction form
    143,797.12/198,431.30 = 79,263.53/x
  3. Step 3: Cross multiply
    143,797.12x = 198,431.30 × 79,263.53
  4. Step 4: Simplify right side
    143,797.12x = 15,728,365,300.49
  5. Step 5: Solve for x
    x = 15,728,365,300.49/143,797.12
  6. Step 6: Final answer
    x = 109,378.87

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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.