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Finding the Fourth Proportional to 123,065.79, 169,846.26 and 72,097.97

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Solution

The fourth proportional to 123,065.79, 169,846.26 and 72,097.97 is: 99,504.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.79 : 169,846.26 = 72,097.97 : x
  2. Step 2: Convert to fraction form
    123,065.79/169,846.26 = 72,097.97/x
  3. Step 3: Cross multiply
    123,065.79x = 169,846.26 × 72,097.97
  4. Step 4: Simplify right side
    123,065.79x = 12,245,569,708.86
  5. Step 5: Solve for x
    x = 12,245,569,708.86/123,065.79
  6. Step 6: Final answer
    x = 99,504.25

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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.