Home / 120,633.80-166,461.20-66,905.35

Finding the Fourth Proportional to 120,633.80, 166,461.20 and 66,905.35

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Solution

The fourth proportional to 120,633.80, 166,461.20 and 66,905.35 is: 92,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,633.80 : 166,461.20 = 66,905.35 : x
  2. Step 2: Convert to fraction form
    120,633.80/166,461.20 = 66,905.35/x
  3. Step 3: Cross multiply
    120,633.80x = 166,461.20 × 66,905.35
  4. Step 4: Simplify right side
    120,633.80x = 11,137,144,847.42
  5. Step 5: Solve for x
    x = 11,137,144,847.42/120,633.80
  6. Step 6: Final answer
    x = 92,321.93

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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.