Home / 123,123.73-169,910.75-66,535.10

Finding the Fourth Proportional to 123,123.73, 169,910.75 and 66,535.10

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Solution

The fourth proportional to 123,123.73, 169,910.75 and 66,535.10 is: 91,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,123.73 : 169,910.75 = 66,535.10 : x
  2. Step 2: Convert to fraction form
    123,123.73/169,910.75 = 66,535.10/x
  3. Step 3: Cross multiply
    123,123.73x = 169,910.75 × 66,535.10
  4. Step 4: Simplify right side
    123,123.73x = 11,305,029,277.76
  5. Step 5: Solve for x
    x = 11,305,029,277.76/123,123.73
  6. Step 6: Final answer
    x = 91,818.44

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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.