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Finding the Fourth Proportional to 122,658.71, 169,273.81 and 68,943.56

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Solution

The fourth proportional to 122,658.71, 169,273.81 and 68,943.56 is: 95,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,658.71 : 169,273.81 = 68,943.56 : x
  2. Step 2: Convert to fraction form
    122,658.71/169,273.81 = 68,943.56/x
  3. Step 3: Cross multiply
    122,658.71x = 169,273.81 × 68,943.56
  4. Step 4: Simplify right side
    122,658.71x = 11,670,338,315.97
  5. Step 5: Solve for x
    x = 11,670,338,315.97/122,658.71
  6. Step 6: Final answer
    x = 95,144.80

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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.