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Finding the Fourth Proportional to 106,660.38, 147,178.71 and 58,910.88

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Solution

The fourth proportional to 106,660.38, 147,178.71 and 58,910.88 is: 81,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,660.38 : 147,178.71 = 58,910.88 : x
  2. Step 2: Convert to fraction form
    106,660.38/147,178.71 = 58,910.88/x
  3. Step 3: Cross multiply
    106,660.38x = 147,178.71 × 58,910.88
  4. Step 4: Simplify right side
    106,660.38x = 8,670,427,323.36
  5. Step 5: Solve for x
    x = 8,670,427,323.36/106,660.38
  6. Step 6: Final answer
    x = 81,290.05

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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.