Home / 212,834.74-319,109.10-84,666.12

Finding the Fourth Proportional to 212,834.74, 319,109.10 and 84,666.12

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Solution

The fourth proportional to 212,834.74, 319,109.10 and 84,666.12 is: 126,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,834.74 : 319,109.10 = 84,666.12 : x
  2. Step 2: Convert to fraction form
    212,834.74/319,109.10 = 84,666.12/x
  3. Step 3: Cross multiply
    212,834.74x = 319,109.10 × 84,666.12
  4. Step 4: Simplify right side
    212,834.74x = 27,017,728,361.56
  5. Step 5: Solve for x
    x = 27,017,728,361.56/212,834.74
  6. Step 6: Final answer
    x = 126,942.29

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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.