Home / 212,951.47-319,358.10-70,758.56

Finding the Fourth Proportional to 212,951.47, 319,358.10 and 70,758.56

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Solution

The fourth proportional to 212,951.47, 319,358.10 and 70,758.56 is: 106,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,951.47 : 319,358.10 = 70,758.56 : x
  2. Step 2: Convert to fraction form
    212,951.47/319,358.10 = 70,758.56/x
  3. Step 3: Cross multiply
    212,951.47x = 319,358.10 × 70,758.56
  4. Step 4: Simplify right side
    212,951.47x = 22,597,317,418.20
  5. Step 5: Solve for x
    x = 22,597,317,418.20/212,951.47
  6. Step 6: Final answer
    x = 106,114.87

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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.