Home / 212,908.03-319,349.51-79,777.15

Finding the Fourth Proportional to 212,908.03, 319,349.51 and 79,777.15

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Solution

The fourth proportional to 212,908.03, 319,349.51 and 79,777.15 is: 119,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,908.03 : 319,349.51 = 79,777.15 : x
  2. Step 2: Convert to fraction form
    212,908.03/319,349.51 = 79,777.15/x
  3. Step 3: Cross multiply
    212,908.03x = 319,349.51 × 79,777.15
  4. Step 4: Simplify right side
    212,908.03x = 25,476,793,761.70
  5. Step 5: Solve for x
    x = 25,476,793,761.70/212,908.03
  6. Step 6: Final answer
    x = 119,661.03

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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.