Home / 120,487.74-166,282.68-66,777.90

Finding the Fourth Proportional to 120,487.74, 166,282.68 and 66,777.90

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Solution

The fourth proportional to 120,487.74, 166,282.68 and 66,777.90 is: 92,158.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.74 : 166,282.68 = 66,777.90 : x
  2. Step 2: Convert to fraction form
    120,487.74/166,282.68 = 66,777.90/x
  3. Step 3: Cross multiply
    120,487.74x = 166,282.68 × 66,777.90
  4. Step 4: Simplify right side
    120,487.74x = 11,104,008,176.77
  5. Step 5: Solve for x
    x = 11,104,008,176.77/120,487.74
  6. Step 6: Final answer
    x = 92,158.82

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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.