Home / 110,861.21-166,333.13-66,519.78

Finding the Fourth Proportional to 110,861.21, 166,333.13 and 66,519.78

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Solution

The fourth proportional to 110,861.21, 166,333.13 and 66,519.78 is: 99,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,861.21 : 166,333.13 = 66,519.78 : x
  2. Step 2: Convert to fraction form
    110,861.21/166,333.13 = 66,519.78/x
  3. Step 3: Cross multiply
    110,861.21x = 166,333.13 × 66,519.78
  4. Step 4: Simplify right side
    110,861.21x = 11,064,442,881.71
  5. Step 5: Solve for x
    x = 11,064,442,881.71/110,861.21
  6. Step 6: Final answer
    x = 99,804.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.