Home / 120,586.20-166,410.36-66,871.86

Finding the Fourth Proportional to 120,586.20, 166,410.36 and 66,871.86

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Solution

The fourth proportional to 120,586.20, 166,410.36 and 66,871.86 is: 92,283.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,586.20 : 166,410.36 = 66,871.86 : x
  2. Step 2: Convert to fraction form
    120,586.20/166,410.36 = 66,871.86/x
  3. Step 3: Cross multiply
    120,586.20x = 166,410.36 × 66,871.86
  4. Step 4: Simplify right side
    120,586.20x = 11,128,170,296.47
  5. Step 5: Solve for x
    x = 11,128,170,296.47/120,586.20
  6. Step 6: Final answer
    x = 92,283.95

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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.