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Finding the Fourth Proportional to 123,846.93, 170,910.26 and 70,130.57

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Solution

The fourth proportional to 123,846.93, 170,910.26 and 70,130.57 is: 96,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,846.93 : 170,910.26 = 70,130.57 : x
  2. Step 2: Convert to fraction form
    123,846.93/170,910.26 = 70,130.57/x
  3. Step 3: Cross multiply
    123,846.93x = 170,910.26 × 70,130.57
  4. Step 4: Simplify right side
    123,846.93x = 11,986,032,747.44
  5. Step 5: Solve for x
    x = 11,986,032,747.44/123,846.93
  6. Step 6: Final answer
    x = 96,781.02

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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.