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Finding the Fourth Proportional to 115,439.75, 173,033.54 and 73,338.65

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Solution

The fourth proportional to 115,439.75, 173,033.54 and 73,338.65 is: 109,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.75 : 173,033.54 = 73,338.65 : x
  2. Step 2: Convert to fraction form
    115,439.75/173,033.54 = 73,338.65/x
  3. Step 3: Cross multiply
    115,439.75x = 173,033.54 × 73,338.65
  4. Step 4: Simplify right side
    115,439.75x = 12,690,045,861.63
  5. Step 5: Solve for x
    x = 12,690,045,861.63/115,439.75
  6. Step 6: Final answer
    x = 109,927.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.