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Finding the Fourth Proportional to 151,863.75, 209,571.98 and 84,795.75

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Solution

The fourth proportional to 151,863.75, 209,571.98 and 84,795.75 is: 117,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,863.75 : 209,571.98 = 84,795.75 : x
  2. Step 2: Convert to fraction form
    151,863.75/209,571.98 = 84,795.75/x
  3. Step 3: Cross multiply
    151,863.75x = 209,571.98 × 84,795.75
  4. Step 4: Simplify right side
    151,863.75x = 17,770,812,799.11
  5. Step 5: Solve for x
    x = 17,770,812,799.11/151,863.75
  6. Step 6: Final answer
    x = 117,018.14

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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.