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Finding the Fourth Proportional to 108,027.40, 149,104.54 and 65,621.48

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Solution

The fourth proportional to 108,027.40, 149,104.54 and 65,621.48 is: 90,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,027.40 : 149,104.54 = 65,621.48 : x
  2. Step 2: Convert to fraction form
    108,027.40/149,104.54 = 65,621.48/x
  3. Step 3: Cross multiply
    108,027.40x = 149,104.54 × 65,621.48
  4. Step 4: Simplify right side
    108,027.40x = 9,784,460,589.52
  5. Step 5: Solve for x
    x = 9,784,460,589.52/108,027.40
  6. Step 6: Final answer
    x = 90,573.88

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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.