Home / 143,646.12-198,231.72-79,989.84

Finding the Fourth Proportional to 143,646.12, 198,231.72 and 79,989.84

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Solution

The fourth proportional to 143,646.12, 198,231.72 and 79,989.84 is: 110,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,646.12 : 198,231.72 = 79,989.84 : x
  2. Step 2: Convert to fraction form
    143,646.12/198,231.72 = 79,989.84/x
  3. Step 3: Cross multiply
    143,646.12x = 198,231.72 × 79,989.84
  4. Step 4: Simplify right side
    143,646.12x = 15,856,523,565.72
  5. Step 5: Solve for x
    x = 15,856,523,565.72/143,646.12
  6. Step 6: Final answer
    x = 110,386.02

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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.