Home / 123,710.24-170,719.92-67,121.60

Finding the Fourth Proportional to 123,710.24, 170,719.92 and 67,121.60

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Solution

The fourth proportional to 123,710.24, 170,719.92 and 67,121.60 is: 92,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,710.24 : 170,719.92 = 67,121.60 : x
  2. Step 2: Convert to fraction form
    123,710.24/170,719.92 = 67,121.60/x
  3. Step 3: Cross multiply
    123,710.24x = 170,719.92 × 67,121.60
  4. Step 4: Simplify right side
    123,710.24x = 11,458,994,182.27
  5. Step 5: Solve for x
    x = 11,458,994,182.27/123,710.24
  6. Step 6: Final answer
    x = 92,627.69

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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.