Home / 212,325.05-318,389.15-79,169.55

Finding the Fourth Proportional to 212,325.05, 318,389.15 and 79,169.55

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Solution

The fourth proportional to 212,325.05, 318,389.15 and 79,169.55 is: 118,717.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,325.05 : 318,389.15 = 79,169.55 : x
  2. Step 2: Convert to fraction form
    212,325.05/318,389.15 = 79,169.55/x
  3. Step 3: Cross multiply
    212,325.05x = 318,389.15 × 79,169.55
  4. Step 4: Simplify right side
    212,325.05x = 25,206,725,334.53
  5. Step 5: Solve for x
    x = 25,206,725,334.53/212,325.05
  6. Step 6: Final answer
    x = 118,717.63

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1.5x scale

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.