Home / 212,022.25-318,082.50-69,862.43

Finding the Fourth Proportional to 212,022.25, 318,082.50 and 69,862.43

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Solution

The fourth proportional to 212,022.25, 318,082.50 and 69,862.43 is: 104,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,022.25 : 318,082.50 = 69,862.43 : x
  2. Step 2: Convert to fraction form
    212,022.25/318,082.50 = 69,862.43/x
  3. Step 3: Cross multiply
    212,022.25x = 318,082.50 × 69,862.43
  4. Step 4: Simplify right side
    212,022.25x = 22,222,017,185.68
  5. Step 5: Solve for x
    x = 22,222,017,185.68/212,022.25
  6. Step 6: Final answer
    x = 104,809.84

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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.