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Finding the Fourth Proportional to 123,215.01, 170,036.60 and 66,626.25

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Solution

The fourth proportional to 123,215.01, 170,036.60 and 66,626.25 is: 91,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,215.01 : 170,036.60 = 66,626.25 : x
  2. Step 2: Convert to fraction form
    123,215.01/170,036.60 = 66,626.25/x
  3. Step 3: Cross multiply
    123,215.01x = 170,036.60 × 66,626.25
  4. Step 4: Simplify right side
    123,215.01x = 11,328,900,687.62
  5. Step 5: Solve for x
    x = 11,328,900,687.62/123,215.01
  6. Step 6: Final answer
    x = 91,944.16

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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.