Home / 123,391.28-170,281.16-66,803.84

Finding the Fourth Proportional to 123,391.28, 170,281.16 and 66,803.84

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Solution

The fourth proportional to 123,391.28, 170,281.16 and 66,803.84 is: 92,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,391.28 : 170,281.16 = 66,803.84 : x
  2. Step 2: Convert to fraction form
    123,391.28/170,281.16 = 66,803.84/x
  3. Step 3: Cross multiply
    123,391.28x = 170,281.16 × 66,803.84
  4. Step 4: Simplify right side
    123,391.28x = 11,375,435,367.65
  5. Step 5: Solve for x
    x = 11,375,435,367.65/123,391.28
  6. Step 6: Final answer
    x = 92,189.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.