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Finding the Fourth Proportional to 100,166.50, 138,230.04 and 54,844.84

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Solution

The fourth proportional to 100,166.50, 138,230.04 and 54,844.84 is: 75,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,166.50 : 138,230.04 = 54,844.84 : x
  2. Step 2: Convert to fraction form
    100,166.50/138,230.04 = 54,844.84/x
  3. Step 3: Cross multiply
    100,166.50x = 138,230.04 × 54,844.84
  4. Step 4: Simplify right side
    100,166.50x = 7,581,204,426.99
  5. Step 5: Solve for x
    x = 7,581,204,426.99/100,166.50
  6. Step 6: Final answer
    x = 75,686.03

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1.5x scale

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.