Home / 68,143.74-102,221.37-21,396.66

Finding the Fourth Proportional to 68,143.74, 102,221.37 and 21,396.66

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Solution

The fourth proportional to 68,143.74, 102,221.37 and 21,396.66 is: 32,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,143.74 : 102,221.37 = 21,396.66 : x
  2. Step 2: Convert to fraction form
    68,143.74/102,221.37 = 21,396.66/x
  3. Step 3: Cross multiply
    68,143.74x = 102,221.37 × 21,396.66
  4. Step 4: Simplify right side
    68,143.74x = 2,187,195,898.62
  5. Step 5: Solve for x
    x = 2,187,195,898.62/68,143.74
  6. Step 6: Final answer
    x = 32,096.80

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1.5x scale

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.