Home / 212,979.14-319,348.88-70,748.30

Finding the Fourth Proportional to 212,979.14, 319,348.88 and 70,748.30

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Solution

The fourth proportional to 212,979.14, 319,348.88 and 70,748.30 is: 106,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,979.14 : 319,348.88 = 70,748.30 : x
  2. Step 2: Convert to fraction form
    212,979.14/319,348.88 = 70,748.30/x
  3. Step 3: Cross multiply
    212,979.14x = 319,348.88 × 70,748.30
  4. Step 4: Simplify right side
    212,979.14x = 22,593,391,076.84
  5. Step 5: Solve for x
    x = 22,593,391,076.84/212,979.14
  6. Step 6: Final answer
    x = 106,082.65

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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.