Home / 110,863.21-166,336.13-66,521.78

Finding the Fourth Proportional to 110,863.21, 166,336.13 and 66,521.78

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Solution

The fourth proportional to 110,863.21, 166,336.13 and 66,521.78 is: 99,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,863.21 : 166,336.13 = 66,521.78 : x
  2. Step 2: Convert to fraction form
    110,863.21/166,336.13 = 66,521.78/x
  3. Step 3: Cross multiply
    110,863.21x = 166,336.13 × 66,521.78
  4. Step 4: Simplify right side
    110,863.21x = 11,064,975,445.91
  5. Step 5: Solve for x
    x = 11,064,975,445.91/110,863.21
  6. Step 6: Final answer
    x = 99,807.46

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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.