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Finding the Fourth Proportional to 106,665.43, 147,179.05 and 68,917.81

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Solution

The fourth proportional to 106,665.43, 147,179.05 and 68,917.81 is: 95,094.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,665.43 : 147,179.05 = 68,917.81 : x
  2. Step 2: Convert to fraction form
    106,665.43/147,179.05 = 68,917.81/x
  3. Step 3: Cross multiply
    106,665.43x = 147,179.05 × 68,917.81
  4. Step 4: Simplify right side
    106,665.43x = 10,143,257,803.88
  5. Step 5: Solve for x
    x = 10,143,257,803.88/106,665.43
  6. Step 6: Final answer
    x = 95,094.14

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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.