Home / 123,126.23-169,914.20-66,537.60

Finding the Fourth Proportional to 123,126.23, 169,914.20 and 66,537.60

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Solution

The fourth proportional to 123,126.23, 169,914.20 and 66,537.60 is: 91,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,126.23 : 169,914.20 = 66,537.60 : x
  2. Step 2: Convert to fraction form
    123,126.23/169,914.20 = 66,537.60/x
  3. Step 3: Cross multiply
    123,126.23x = 169,914.20 × 66,537.60
  4. Step 4: Simplify right side
    123,126.23x = 11,305,683,073.92
  5. Step 5: Solve for x
    x = 11,305,683,073.92/123,126.23
  6. Step 6: Final answer
    x = 91,821.89

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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.