Home / 120,463.21-166,239.42-66,006.72

Finding the Fourth Proportional to 120,463.21, 166,239.42 and 66,006.72

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Solution

The fourth proportional to 120,463.21, 166,239.42 and 66,006.72 is: 91,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,463.21 : 166,239.42 = 66,006.72 : x
  2. Step 2: Convert to fraction form
    120,463.21/166,239.42 = 66,006.72/x
  3. Step 3: Cross multiply
    120,463.21x = 166,239.42 × 66,006.72
  4. Step 4: Simplify right side
    120,463.21x = 10,972,919,440.21
  5. Step 5: Solve for x
    x = 10,972,919,440.21/120,463.21
  6. Step 6: Final answer
    x = 91,089.38

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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.