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Finding the Fourth Proportional to 108,881.38, 150,272.58 and 66,464.56

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Solution

The fourth proportional to 108,881.38, 150,272.58 and 66,464.56 is: 91,731.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,881.38 : 150,272.58 = 66,464.56 : x
  2. Step 2: Convert to fraction form
    108,881.38/150,272.58 = 66,464.56/x
  3. Step 3: Cross multiply
    108,881.38x = 150,272.58 × 66,464.56
  4. Step 4: Simplify right side
    108,881.38x = 9,987,800,909.76
  5. Step 5: Solve for x
    x = 9,987,800,909.76/108,881.38
  6. Step 6: Final answer
    x = 91,731.03

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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.