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Finding the Fourth Proportional to 109,641.63, 151,309.11 and 67,191.96

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Solution

The fourth proportional to 109,641.63, 151,309.11 and 67,191.96 is: 92,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,641.63 : 151,309.11 = 67,191.96 : x
  2. Step 2: Convert to fraction form
    109,641.63/151,309.11 = 67,191.96/x
  3. Step 3: Cross multiply
    109,641.63x = 151,309.11 × 67,191.96
  4. Step 4: Simplify right side
    109,641.63x = 10,166,754,910.21
  5. Step 5: Solve for x
    x = 10,166,754,910.21/109,641.63
  6. Step 6: Final answer
    x = 92,727.15

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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.