Home / 68,086.45-102,129.69-18,166.74

Finding the Fourth Proportional to 68,086.45, 102,129.69 and 18,166.74

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Solution

The fourth proportional to 68,086.45, 102,129.69 and 18,166.74 is: 27,250.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,086.45 : 102,129.69 = 18,166.74 : x
  2. Step 2: Convert to fraction form
    68,086.45/102,129.69 = 18,166.74/x
  3. Step 3: Cross multiply
    68,086.45x = 102,129.69 × 18,166.74
  4. Step 4: Simplify right side
    68,086.45x = 1,855,363,243.14
  5. Step 5: Solve for x
    x = 1,855,363,243.14/68,086.45
  6. Step 6: Final answer
    x = 27,250.11

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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.