Home / 212,921.05-319,288.85-61,084.62

Finding the Fourth Proportional to 212,921.05, 319,288.85 and 61,084.62

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Solution

The fourth proportional to 212,921.05, 319,288.85 and 61,084.62 is: 91,600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,921.05 : 319,288.85 = 61,084.62 : x
  2. Step 2: Convert to fraction form
    212,921.05/319,288.85 = 61,084.62/x
  3. Step 3: Cross multiply
    212,921.05x = 319,288.85 × 61,084.62
  4. Step 4: Simplify right side
    212,921.05x = 19,503,638,072.49
  5. Step 5: Solve for x
    x = 19,503,638,072.49/212,921.05
  6. Step 6: Final answer
    x = 91,600.33

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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.