Home / 212,559.45-318,829.95-79,440.86

Finding the Fourth Proportional to 212,559.45, 318,829.95 and 79,440.86

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Solution

The fourth proportional to 212,559.45, 318,829.95 and 79,440.86 is: 119,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,559.45 : 318,829.95 = 79,440.86 : x
  2. Step 2: Convert to fraction form
    212,559.45/318,829.95 = 79,440.86/x
  3. Step 3: Cross multiply
    212,559.45x = 318,829.95 × 79,440.86
  4. Step 4: Simplify right side
    212,559.45x = 25,328,123,827.61
  5. Step 5: Solve for x
    x = 25,328,123,827.61/212,559.45
  6. Step 6: Final answer
    x = 119,157.83

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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.