Home / 120,487.82-166,270.64-66,772.35

Finding the Fourth Proportional to 120,487.82, 166,270.64 and 66,772.35

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Solution

The fourth proportional to 120,487.82, 166,270.64 and 66,772.35 is: 92,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.82 : 166,270.64 = 66,772.35 : x
  2. Step 2: Convert to fraction form
    120,487.82/166,270.64 = 66,772.35/x
  3. Step 3: Cross multiply
    120,487.82x = 166,270.64 × 66,772.35
  4. Step 4: Simplify right side
    120,487.82x = 11,102,281,034.94
  5. Step 5: Solve for x
    x = 11,102,281,034.94/120,487.82
  6. Step 6: Final answer
    x = 92,144.43

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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.