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Finding the Fourth Proportional to 162,915.80, 244,179.30 and 68,145.80

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Solution

The fourth proportional to 162,915.80, 244,179.30 and 68,145.80 is: 102,137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,915.80 : 244,179.30 = 68,145.80 : x
  2. Step 2: Convert to fraction form
    162,915.80/244,179.30 = 68,145.80/x
  3. Step 3: Cross multiply
    162,915.80x = 244,179.30 × 68,145.80
  4. Step 4: Simplify right side
    162,915.80x = 16,639,793,741.94
  5. Step 5: Solve for x
    x = 16,639,793,741.94/162,915.80
  6. Step 6: Final answer
    x = 102,137.38

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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.