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Finding the Fourth Proportional to 267,617.81, 401,426.72 and 90,109.96

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Solution

The fourth proportional to 267,617.81, 401,426.72 and 90,109.96 is: 135,164.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,617.81 : 401,426.72 = 90,109.96 : x
  2. Step 2: Convert to fraction form
    267,617.81/401,426.72 = 90,109.96/x
  3. Step 3: Cross multiply
    267,617.81x = 401,426.72 × 90,109.96
  4. Step 4: Simplify right side
    267,617.81x = 36,172,545,682.13
  5. Step 5: Solve for x
    x = 36,172,545,682.13/267,617.81
  6. Step 6: Final answer
    x = 135,164.94

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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.