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Finding the Fourth Proportional to 108,474.89, 149,710.26 and 65,456.60

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Solution

The fourth proportional to 108,474.89, 149,710.26 and 65,456.60 is: 90,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,474.89 : 149,710.26 = 65,456.60 : x
  2. Step 2: Convert to fraction form
    108,474.89/149,710.26 = 65,456.60/x
  3. Step 3: Cross multiply
    108,474.89x = 149,710.26 × 65,456.60
  4. Step 4: Simplify right side
    108,474.89x = 9,799,524,277.43
  5. Step 5: Solve for x
    x = 9,799,524,277.43/108,474.89
  6. Step 6: Final answer
    x = 90,339.10

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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.