Home / 123,215.39-170,037.11-66,626.63

Finding the Fourth Proportional to 123,215.39, 170,037.11 and 66,626.63

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Solution

The fourth proportional to 123,215.39, 170,037.11 and 66,626.63 is: 91,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,215.39 : 170,037.11 = 66,626.63 : x
  2. Step 2: Convert to fraction form
    123,215.39/170,037.11 = 66,626.63/x
  3. Step 3: Cross multiply
    123,215.39x = 170,037.11 × 66,626.63
  4. Step 4: Simplify right side
    123,215.39x = 11,328,998,930.62
  5. Step 5: Solve for x
    x = 11,328,998,930.62/123,215.39
  6. Step 6: Final answer
    x = 91,944.68

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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.