Home / 212,379.68-318,572.04-72,149.24

Finding the Fourth Proportional to 212,379.68, 318,572.04 and 72,149.24

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Solution

The fourth proportional to 212,379.68, 318,572.04 and 72,149.24 is: 108,224.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,379.68 : 318,572.04 = 72,149.24 : x
  2. Step 2: Convert to fraction form
    212,379.68/318,572.04 = 72,149.24/x
  3. Step 3: Cross multiply
    212,379.68x = 318,572.04 × 72,149.24
  4. Step 4: Simplify right side
    212,379.68x = 22,984,730,571.25
  5. Step 5: Solve for x
    x = 22,984,730,571.25/212,379.68
  6. Step 6: Final answer
    x = 108,224.72

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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.