Home / 212,818.20-319,065.30-107,712.60

Finding the Fourth Proportional to 212,818.20, 319,065.30 and 107,712.60

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Solution

The fourth proportional to 212,818.20, 319,065.30 and 107,712.60 is: 161,486.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,818.20 : 319,065.30 = 107,712.60 : x
  2. Step 2: Convert to fraction form
    212,818.20/319,065.30 = 107,712.60/x
  3. Step 3: Cross multiply
    212,818.20x = 319,065.30 × 107,712.60
  4. Step 4: Simplify right side
    212,818.20x = 34,367,353,032.78
  5. Step 5: Solve for x
    x = 34,367,353,032.78/212,818.20
  6. Step 6: Final answer
    x = 161,486.91

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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.