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Finding the Fourth Proportional to 126,915.76, 175,137.72 and 75,956.50

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Solution

The fourth proportional to 126,915.76, 175,137.72 and 75,956.50 is: 104,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,915.76 : 175,137.72 = 75,956.50 : x
  2. Step 2: Convert to fraction form
    126,915.76/175,137.72 = 75,956.50/x
  3. Step 3: Cross multiply
    126,915.76x = 175,137.72 × 75,956.50
  4. Step 4: Simplify right side
    126,915.76x = 13,302,848,229.18
  5. Step 5: Solve for x
    x = 13,302,848,229.18/126,915.76
  6. Step 6: Final answer
    x = 104,816.36

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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.