Home / 143,709.12-198,258.98-85,553.96

Finding the Fourth Proportional to 143,709.12, 198,258.98 and 85,553.96

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Solution

The fourth proportional to 143,709.12, 198,258.98 and 85,553.96 is: 118,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,709.12 : 198,258.98 = 85,553.96 : x
  2. Step 2: Convert to fraction form
    143,709.12/198,258.98 = 85,553.96/x
  3. Step 3: Cross multiply
    143,709.12x = 198,258.98 × 85,553.96
  4. Step 4: Simplify right side
    143,709.12x = 16,961,839,425.50
  5. Step 5: Solve for x
    x = 16,961,839,425.50/143,709.12
  6. Step 6: Final answer
    x = 118,028.97

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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.