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Finding the Fourth Proportional to 151,229.70, 208,684.62 and 87,571.62

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Solution

The fourth proportional to 151,229.70, 208,684.62 and 87,571.62 is: 120,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,229.70 : 208,684.62 = 87,571.62 : x
  2. Step 2: Convert to fraction form
    151,229.70/208,684.62 = 87,571.62/x
  3. Step 3: Cross multiply
    151,229.70x = 208,684.62 × 87,571.62
  4. Step 4: Simplify right side
    151,229.70x = 18,274,850,242.48
  5. Step 5: Solve for x
    x = 18,274,850,242.48/151,229.70
  6. Step 6: Final answer
    x = 120,841.67

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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.