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Finding the Fourth Proportional to 101,787.84, 152,487.36 and 66,657.60

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Solution

The fourth proportional to 101,787.84, 152,487.36 and 66,657.60 is: 99,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,787.84 : 152,487.36 = 66,657.60 : x
  2. Step 2: Convert to fraction form
    101,787.84/152,487.36 = 66,657.60/x
  3. Step 3: Cross multiply
    101,787.84x = 152,487.36 × 66,657.60
  4. Step 4: Simplify right side
    101,787.84x = 10,164,441,447.94
  5. Step 5: Solve for x
    x = 10,164,441,447.94/101,787.84
  6. Step 6: Final answer
    x = 99,859.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.