Home / 212,244.64-318,342.66-79,129.24

Finding the Fourth Proportional to 212,244.64, 318,342.66 and 79,129.24

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Solution

The fourth proportional to 212,244.64, 318,342.66 and 79,129.24 is: 118,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,244.64 : 318,342.66 = 79,129.24 : x
  2. Step 2: Convert to fraction form
    212,244.64/318,342.66 = 79,129.24/x
  3. Step 3: Cross multiply
    212,244.64x = 318,342.66 × 79,129.24
  4. Step 4: Simplify right side
    212,244.64x = 25,190,212,745.38
  5. Step 5: Solve for x
    x = 25,190,212,745.38/212,244.64
  6. Step 6: Final answer
    x = 118,684.80

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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.