Home / 212,343.93-318,293.78-79,166.25

Finding the Fourth Proportional to 212,343.93, 318,293.78 and 79,166.25

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Solution

The fourth proportional to 212,343.93, 318,293.78 and 79,166.25 is: 118,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,343.93 : 318,293.78 = 79,166.25 : x
  2. Step 2: Convert to fraction form
    212,343.93/318,293.78 = 79,166.25/x
  3. Step 3: Cross multiply
    212,343.93x = 318,293.78 × 79,166.25
  4. Step 4: Simplify right side
    212,343.93x = 25,198,124,565.09
  5. Step 5: Solve for x
    x = 25,198,124,565.09/212,343.93
  6. Step 6: Final answer
    x = 118,666.56

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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.