Home / 123,175.77-169,983-66,587.15

Finding the Fourth Proportional to 123,175.77, 169,983 and 66,587.15

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Solution

The fourth proportional to 123,175.77, 169,983 and 66,587.15 is: 91,890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,175.77 : 169,983 = 66,587.15 : x
  2. Step 2: Convert to fraction form
    123,175.77/169,983 = 66,587.15/x
  3. Step 3: Cross multiply
    123,175.77x = 169,983 × 66,587.15
  4. Step 4: Simplify right side
    123,175.77x = 11,318,682,668.54
  5. Step 5: Solve for x
    x = 11,318,682,668.54/123,175.77
  6. Step 6: Final answer
    x = 91,890.50

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Half scale
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Double scale
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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.