Home / 122,716.98-169,282.26-79,123.14

Finding the Fourth Proportional to 122,716.98, 169,282.26 and 79,123.14

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Solution

The fourth proportional to 122,716.98, 169,282.26 and 79,123.14 is: 109,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,716.98 : 169,282.26 = 79,123.14 : x
  2. Step 2: Convert to fraction form
    122,716.98/169,282.26 = 79,123.14/x
  3. Step 3: Cross multiply
    122,716.98x = 169,282.26 × 79,123.14
  4. Step 4: Simplify right side
    122,716.98x = 13,394,143,957.50
  5. Step 5: Solve for x
    x = 13,394,143,957.50/122,716.98
  6. Step 6: Final answer
    x = 109,146.62

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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.