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Finding the Fourth Proportional to 207,645.57, 286,553.57 and 122,761.89

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Solution

The fourth proportional to 207,645.57, 286,553.57 and 122,761.89 is: 169,412.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,645.57 : 286,553.57 = 122,761.89 : x
  2. Step 2: Convert to fraction form
    207,645.57/286,553.57 = 122,761.89/x
  3. Step 3: Cross multiply
    207,645.57x = 286,553.57 × 122,761.89
  4. Step 4: Simplify right side
    207,645.57x = 35,177,857,225.64
  5. Step 5: Solve for x
    x = 35,177,857,225.64/207,645.57
  6. Step 6: Final answer
    x = 169,412.99

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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.