Home / 123,125.23-169,912.82-66,536.60

Finding the Fourth Proportional to 123,125.23, 169,912.82 and 66,536.60

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Solution

The fourth proportional to 123,125.23, 169,912.82 and 66,536.60 is: 91,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,125.23 : 169,912.82 = 66,536.60 : x
  2. Step 2: Convert to fraction form
    123,125.23/169,912.82 = 66,536.60/x
  3. Step 3: Cross multiply
    123,125.23x = 169,912.82 × 66,536.60
  4. Step 4: Simplify right side
    123,125.23x = 11,305,421,339.21
  5. Step 5: Solve for x
    x = 11,305,421,339.21/123,125.23
  6. Step 6: Final answer
    x = 91,820.51

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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.