Home / 212,815.10-319,076.85-100,549.10

Finding the Fourth Proportional to 212,815.10, 319,076.85 and 100,549.10

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Solution

The fourth proportional to 212,815.10, 319,076.85 and 100,549.10 is: 150,754.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,815.10 : 319,076.85 = 100,549.10 : x
  2. Step 2: Convert to fraction form
    212,815.10/319,076.85 = 100,549.10/x
  3. Step 3: Cross multiply
    212,815.10x = 319,076.85 × 100,549.10
  4. Step 4: Simplify right side
    212,815.10x = 32,082,890,098.34
  5. Step 5: Solve for x
    x = 32,082,890,098.34/212,815.10
  6. Step 6: Final answer
    x = 150,754.76

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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.