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Finding the Fourth Proportional to 172,874.20, 259,311.30 and 162,376.60

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Solution

The fourth proportional to 172,874.20, 259,311.30 and 162,376.60 is: 243,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,874.20 : 259,311.30 = 162,376.60 : x
  2. Step 2: Convert to fraction form
    172,874.20/259,311.30 = 162,376.60/x
  3. Step 3: Cross multiply
    172,874.20x = 259,311.30 × 162,376.60
  4. Step 4: Simplify right side
    172,874.20x = 42,106,087,235.58
  5. Step 5: Solve for x
    x = 42,106,087,235.58/172,874.20
  6. Step 6: Final answer
    x = 243,564.90

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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.