Home / 212,462.22-318,727.62-86,110.32

Finding the Fourth Proportional to 212,462.22, 318,727.62 and 86,110.32

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Solution

The fourth proportional to 212,462.22, 318,727.62 and 86,110.32 is: 129,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,462.22 : 318,727.62 = 86,110.32 : x
  2. Step 2: Convert to fraction form
    212,462.22/318,727.62 = 86,110.32/x
  3. Step 3: Cross multiply
    212,462.22x = 318,727.62 × 86,110.32
  4. Step 4: Simplify right side
    212,462.22x = 27,445,737,351.04
  5. Step 5: Solve for x
    x = 27,445,737,351.04/212,462.22
  6. Step 6: Final answer
    x = 129,179.38

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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.