Home / 86,990.22-120,104.31-66,811.04

Finding the Fourth Proportional to 86,990.22, 120,104.31 and 66,811.04

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Solution

The fourth proportional to 86,990.22, 120,104.31 and 66,811.04 is: 92,243.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,990.22 : 120,104.31 = 66,811.04 : x
  2. Step 2: Convert to fraction form
    86,990.22/120,104.31 = 66,811.04/x
  3. Step 3: Cross multiply
    86,990.22x = 120,104.31 × 66,811.04
  4. Step 4: Simplify right side
    86,990.22x = 8,024,293,259.06
  5. Step 5: Solve for x
    x = 8,024,293,259.06/86,990.22
  6. Step 6: Final answer
    x = 92,243.63

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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.