Home / 212,343.04-318,563.88-72,101.71

Finding the Fourth Proportional to 212,343.04, 318,563.88 and 72,101.71

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Solution

The fourth proportional to 212,343.04, 318,563.88 and 72,101.71 is: 108,169.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,343.04 : 318,563.88 = 72,101.71 : x
  2. Step 2: Convert to fraction form
    212,343.04/318,563.88 = 72,101.71/x
  3. Step 3: Cross multiply
    212,343.04x = 318,563.88 × 72,101.71
  4. Step 4: Simplify right side
    212,343.04x = 22,969,000,492.23
  5. Step 5: Solve for x
    x = 22,969,000,492.23/212,343.04
  6. Step 6: Final answer
    x = 108,169.31

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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.