Home / 213,121.98-319,734.90-70,966.98

Finding the Fourth Proportional to 213,121.98, 319,734.90 and 70,966.98

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Solution

The fourth proportional to 213,121.98, 319,734.90 and 70,966.98 is: 106,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,121.98 : 319,734.90 = 70,966.98 : x
  2. Step 2: Convert to fraction form
    213,121.98/319,734.90 = 70,966.98/x
  3. Step 3: Cross multiply
    213,121.98x = 319,734.90 × 70,966.98
  4. Step 4: Simplify right side
    213,121.98x = 22,690,620,253.60
  5. Step 5: Solve for x
    x = 22,690,620,253.60/213,121.98
  6. Step 6: Final answer
    x = 106,467.76

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1.5x scale

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.