Home / 68,140.41-102,220.38-18,222.18

Finding the Fourth Proportional to 68,140.41, 102,220.38 and 18,222.18

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Solution

The fourth proportional to 68,140.41, 102,220.38 and 18,222.18 is: 27,335.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,140.41 : 102,220.38 = 18,222.18 : x
  2. Step 2: Convert to fraction form
    68,140.41/102,220.38 = 18,222.18/x
  3. Step 3: Cross multiply
    68,140.41x = 102,220.38 × 18,222.18
  4. Step 4: Simplify right side
    68,140.41x = 1,862,678,164.03
  5. Step 5: Solve for x
    x = 1,862,678,164.03/68,140.41
  6. Step 6: Final answer
    x = 27,335.88

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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.