Home / 143,798.12-198,432.68-79,264.53

Finding the Fourth Proportional to 143,798.12, 198,432.68 and 79,264.53

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Solution

The fourth proportional to 143,798.12, 198,432.68 and 79,264.53 is: 109,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,798.12 : 198,432.68 = 79,264.53 : x
  2. Step 2: Convert to fraction form
    143,798.12/198,432.68 = 79,264.53/x
  3. Step 3: Cross multiply
    143,798.12x = 198,432.68 × 79,264.53
  4. Step 4: Simplify right side
    143,798.12x = 15,728,673,315.00
  5. Step 5: Solve for x
    x = 15,728,673,315.00/143,798.12
  6. Step 6: Final answer
    x = 109,380.25

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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.