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Finding the Fourth Proportional to 135,491.91, 186,677.75 and 89,469.83

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Solution

The fourth proportional to 135,491.91, 186,677.75 and 89,469.83 is: 123,269.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,491.91 : 186,677.75 = 89,469.83 : x
  2. Step 2: Convert to fraction form
    135,491.91/186,677.75 = 89,469.83/x
  3. Step 3: Cross multiply
    135,491.91x = 186,677.75 × 89,469.83
  4. Step 4: Simplify right side
    135,491.91x = 16,702,026,192.74
  5. Step 5: Solve for x
    x = 16,702,026,192.74/135,491.91
  6. Step 6: Final answer
    x = 123,269.54

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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.