Home / 212,726.66-319,145.33-79,617.20

Finding the Fourth Proportional to 212,726.66, 319,145.33 and 79,617.20

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Solution

The fourth proportional to 212,726.66, 319,145.33 and 79,617.20 is: 119,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,726.66 : 319,145.33 = 79,617.20 : x
  2. Step 2: Convert to fraction form
    212,726.66/319,145.33 = 79,617.20/x
  3. Step 3: Cross multiply
    212,726.66x = 319,145.33 × 79,617.20
  4. Step 4: Simplify right side
    212,726.66x = 25,409,456,170.99
  5. Step 5: Solve for x
    x = 25,409,456,170.99/212,726.66
  6. Step 6: Final answer
    x = 119,446.51

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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.