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Finding the Fourth Proportional to 126,493.88, 174,568.32 and 72,787.10

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Solution

The fourth proportional to 126,493.88, 174,568.32 and 72,787.10 is: 100,450.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,493.88 : 174,568.32 = 72,787.10 : x
  2. Step 2: Convert to fraction form
    126,493.88/174,568.32 = 72,787.10/x
  3. Step 3: Cross multiply
    126,493.88x = 174,568.32 × 72,787.10
  4. Step 4: Simplify right side
    126,493.88x = 12,706,321,764.67
  5. Step 5: Solve for x
    x = 12,706,321,764.67/126,493.88
  6. Step 6: Final answer
    x = 100,450.09

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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.