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Finding the Fourth Proportional to 123,758.89, 170,782.09 and 70,046.84

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Solution

The fourth proportional to 123,758.89, 170,782.09 and 70,046.84 is: 96,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,758.89 : 170,782.09 = 70,046.84 : x
  2. Step 2: Convert to fraction form
    123,758.89/170,782.09 = 70,046.84/x
  3. Step 3: Cross multiply
    123,758.89x = 170,782.09 × 70,046.84
  4. Step 4: Simplify right side
    123,758.89x = 11,962,745,984.93
  5. Step 5: Solve for x
    x = 11,962,745,984.93/123,758.89
  6. Step 6: Final answer
    x = 96,661.71

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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.