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Finding the Fourth Proportional to 100,063.62, 138,086.68 and 54,742.91

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Solution

The fourth proportional to 100,063.62, 138,086.68 and 54,742.91 is: 75,544.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,063.62 : 138,086.68 = 54,742.91 : x
  2. Step 2: Convert to fraction form
    100,063.62/138,086.68 = 54,742.91/x
  3. Step 3: Cross multiply
    100,063.62x = 138,086.68 × 54,742.91
  4. Step 4: Simplify right side
    100,063.62x = 7,559,266,695.44
  5. Step 5: Solve for x
    x = 7,559,266,695.44/100,063.62
  6. Step 6: Final answer
    x = 75,544.61

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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.