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Finding the Fourth Proportional to 123,939.41, 171,035.96 and 70,234.65

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Solution

The fourth proportional to 123,939.41, 171,035.96 and 70,234.65 is: 96,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,939.41 : 171,035.96 = 70,234.65 : x
  2. Step 2: Convert to fraction form
    123,939.41/171,035.96 = 70,234.65/x
  3. Step 3: Cross multiply
    123,939.41x = 171,035.96 × 70,234.65
  4. Step 4: Simplify right side
    123,939.41x = 12,012,650,436.84
  5. Step 5: Solve for x
    x = 12,012,650,436.84/123,939.41
  6. Step 6: Final answer
    x = 96,923.58

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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.