Home / 86,968.41-120,073.98-66,789.09

Finding the Fourth Proportional to 86,968.41, 120,073.98 and 66,789.09

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Solution

The fourth proportional to 86,968.41, 120,073.98 and 66,789.09 is: 92,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,968.41 : 120,073.98 = 66,789.09 : x
  2. Step 2: Convert to fraction form
    86,968.41/120,073.98 = 66,789.09/x
  3. Step 3: Cross multiply
    86,968.41x = 120,073.98 × 66,789.09
  4. Step 4: Simplify right side
    86,968.41x = 8,019,631,856.88
  5. Step 5: Solve for x
    x = 8,019,631,856.88/86,968.41
  6. Step 6: Final answer
    x = 92,213.16

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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.