Home / 212,902.20-319,354.62-63,143.72

Finding the Fourth Proportional to 212,902.20, 319,354.62 and 63,143.72

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Solution

The fourth proportional to 212,902.20, 319,354.62 and 63,143.72 is: 94,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,902.20 : 319,354.62 = 63,143.72 : x
  2. Step 2: Convert to fraction form
    212,902.20/319,354.62 = 63,143.72/x
  3. Step 3: Cross multiply
    212,902.20x = 319,354.62 × 63,143.72
  4. Step 4: Simplify right side
    212,902.20x = 20,165,238,705.99
  5. Step 5: Solve for x
    x = 20,165,238,705.99/212,902.20
  6. Step 6: Final answer
    x = 94,715.97

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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.