Home / 123,250.56-170,085.78-66,661.92

Finding the Fourth Proportional to 123,250.56, 170,085.78 and 66,661.92

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Solution

The fourth proportional to 123,250.56, 170,085.78 and 66,661.92 is: 91,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,250.56 : 170,085.78 = 66,661.92 : x
  2. Step 2: Convert to fraction form
    123,250.56/170,085.78 = 66,661.92/x
  3. Step 3: Cross multiply
    123,250.56x = 170,085.78 × 66,661.92
  4. Step 4: Simplify right side
    123,250.56x = 11,338,244,659.50
  5. Step 5: Solve for x
    x = 11,338,244,659.50/123,250.56
  6. Step 6: Final answer
    x = 91,993.45

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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.