Home / 143,915.18-198,657.66-108,208.88

Finding the Fourth Proportional to 143,915.18, 198,657.66 and 108,208.88

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Solution

The fourth proportional to 143,915.18, 198,657.66 and 108,208.88 is: 149,369.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,915.18 : 198,657.66 = 108,208.88 : x
  2. Step 2: Convert to fraction form
    143,915.18/198,657.66 = 108,208.88/x
  3. Step 3: Cross multiply
    143,915.18x = 198,657.66 × 108,208.88
  4. Step 4: Simplify right side
    143,915.18x = 21,496,522,892.02
  5. Step 5: Solve for x
    x = 21,496,522,892.02/143,915.18
  6. Step 6: Final answer
    x = 149,369.39

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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.