Home / 117,615.57-162,297.77-66,618.12

Finding the Fourth Proportional to 117,615.57, 162,297.77 and 66,618.12

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Solution

The fourth proportional to 117,615.57, 162,297.77 and 66,618.12 is: 91,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,615.57 : 162,297.77 = 66,618.12 : x
  2. Step 2: Convert to fraction form
    117,615.57/162,297.77 = 66,618.12/x
  3. Step 3: Cross multiply
    117,615.57x = 162,297.77 × 66,618.12
  4. Step 4: Simplify right side
    117,615.57x = 10,811,971,984.50
  5. Step 5: Solve for x
    x = 10,811,971,984.50/117,615.57
  6. Step 6: Final answer
    x = 91,926.37

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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.