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Finding the Fourth Proportional to 135,422.21, 203,008.91 and 46,654.61

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Solution

The fourth proportional to 135,422.21, 203,008.91 and 46,654.61 is: 69,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,422.21 : 203,008.91 = 46,654.61 : x
  2. Step 2: Convert to fraction form
    135,422.21/203,008.91 = 46,654.61/x
  3. Step 3: Cross multiply
    135,422.21x = 203,008.91 × 46,654.61
  4. Step 4: Simplify right side
    135,422.21x = 9,471,300,624.17
  5. Step 5: Solve for x
    x = 9,471,300,624.17/135,422.21
  6. Step 6: Final answer
    x = 69,939.05

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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.