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Finding the Fourth Proportional to 123,833.82, 170,891.34 and 70,129.29

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Solution

The fourth proportional to 123,833.82, 170,891.34 and 70,129.29 is: 96,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,833.82 : 170,891.34 = 70,129.29 : x
  2. Step 2: Convert to fraction form
    123,833.82/170,891.34 = 70,129.29/x
  3. Step 3: Cross multiply
    123,833.82x = 170,891.34 × 70,129.29
  4. Step 4: Simplify right side
    123,833.82x = 11,984,488,341.35
  5. Step 5: Solve for x
    x = 11,984,488,341.35/123,833.82
  6. Step 6: Final answer
    x = 96,778.80

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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.