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Finding the Fourth Proportional to 117,105.01, 175,657.21 and 90,489.69

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Solution

The fourth proportional to 117,105.01, 175,657.21 and 90,489.69 is: 135,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,105.01 : 175,657.21 = 90,489.69 : x
  2. Step 2: Convert to fraction form
    117,105.01/175,657.21 = 90,489.69/x
  3. Step 3: Cross multiply
    117,105.01x = 175,657.21 × 90,489.69
  4. Step 4: Simplify right side
    117,105.01x = 15,895,166,252.94
  5. Step 5: Solve for x
    x = 15,895,166,252.94/117,105.01
  6. Step 6: Final answer
    x = 135,734.30

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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.