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Finding the Fourth Proportional to 159,638.00, 220,309.74 and 91,655.10

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Solution

The fourth proportional to 159,638.00, 220,309.74 and 91,655.10 is: 126,489.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,638.00 : 220,309.74 = 91,655.10 : x
  2. Step 2: Convert to fraction form
    159,638.00/220,309.74 = 91,655.10/x
  3. Step 3: Cross multiply
    159,638.00x = 220,309.74 × 91,655.10
  4. Step 4: Simplify right side
    159,638.00x = 20,192,511,250.67
  5. Step 5: Solve for x
    x = 20,192,511,250.67/159,638.00
  6. Step 6: Final answer
    x = 126,489.38

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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.