Home / 121,515.72-167,687.74-66,322.92

Finding the Fourth Proportional to 121,515.72, 167,687.74 and 66,322.92

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Solution

The fourth proportional to 121,515.72, 167,687.74 and 66,322.92 is: 91,523.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,515.72 : 167,687.74 = 66,322.92 : x
  2. Step 2: Convert to fraction form
    121,515.72/167,687.74 = 66,322.92/x
  3. Step 3: Cross multiply
    121,515.72x = 167,687.74 × 66,322.92
  4. Step 4: Simplify right side
    121,515.72x = 11,121,540,565.00
  5. Step 5: Solve for x
    x = 11,121,540,565.00/121,515.72
  6. Step 6: Final answer
    x = 91,523.47

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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.