Home / 212,902.20-319,180.08-79,707.84

Finding the Fourth Proportional to 212,902.20, 319,180.08 and 79,707.84

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Solution

The fourth proportional to 212,902.20, 319,180.08 and 79,707.84 is: 119,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,902.20 : 319,180.08 = 79,707.84 : x
  2. Step 2: Convert to fraction form
    212,902.20/319,180.08 = 79,707.84/x
  3. Step 3: Cross multiply
    212,902.20x = 319,180.08 × 79,707.84
  4. Step 4: Simplify right side
    212,902.20x = 25,441,154,747.83
  5. Step 5: Solve for x
    x = 25,441,154,747.83/212,902.20
  6. Step 6: Final answer
    x = 119,496.91

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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.