Home / 110,862.21-166,334.63-66,520.78

Finding the Fourth Proportional to 110,862.21, 166,334.63 and 66,520.78

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Solution

The fourth proportional to 110,862.21, 166,334.63 and 66,520.78 is: 99,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,862.21 : 166,334.63 = 66,520.78 : x
  2. Step 2: Convert to fraction form
    110,862.21/166,334.63 = 66,520.78/x
  3. Step 3: Cross multiply
    110,862.21x = 166,334.63 × 66,520.78
  4. Step 4: Simplify right side
    110,862.21x = 11,064,709,328.61
  5. Step 5: Solve for x
    x = 11,064,709,328.61/110,862.21
  6. Step 6: Final answer
    x = 99,805.96

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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.