Home / 212,145.96-318,357.37-79,132.62

Finding the Fourth Proportional to 212,145.96, 318,357.37 and 79,132.62

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Solution

The fourth proportional to 212,145.96, 318,357.37 and 79,132.62 is: 118,750.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,145.96 : 318,357.37 = 79,132.62 : x
  2. Step 2: Convert to fraction form
    212,145.96/318,357.37 = 79,132.62/x
  3. Step 3: Cross multiply
    212,145.96x = 318,357.37 × 79,132.62
  4. Step 4: Simplify right side
    212,145.96x = 25,192,452,784.41
  5. Step 5: Solve for x
    x = 25,192,452,784.41/212,145.96
  6. Step 6: Final answer
    x = 118,750.57

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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.