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Finding the Fourth Proportional to 143,552.78, 198,102.54 and 89,084.67

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Solution

The fourth proportional to 143,552.78, 198,102.54 and 89,084.67 is: 122,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,552.78 : 198,102.54 = 89,084.67 : x
  2. Step 2: Convert to fraction form
    143,552.78/198,102.54 = 89,084.67/x
  3. Step 3: Cross multiply
    143,552.78x = 198,102.54 × 89,084.67
  4. Step 4: Simplify right side
    143,552.78x = 17,647,899,402.06
  5. Step 5: Solve for x
    x = 17,647,899,402.06/143,552.78
  6. Step 6: Final answer
    x = 122,936.66

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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.