Home / 217,128.53-325,723.71-67,381.76

Finding the Fourth Proportional to 217,128.53, 325,723.71 and 67,381.76

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Solution

The fourth proportional to 217,128.53, 325,723.71 and 67,381.76 is: 101,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,128.53 : 325,723.71 = 67,381.76 : x
  2. Step 2: Convert to fraction form
    217,128.53/325,723.71 = 67,381.76/x
  3. Step 3: Cross multiply
    217,128.53x = 325,723.71 × 67,381.76
  4. Step 4: Simplify right side
    217,128.53x = 21,947,836,853.53
  5. Step 5: Solve for x
    x = 21,947,836,853.53/217,128.53
  6. Step 6: Final answer
    x = 101,082.23

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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.