Home / 120,321.86-166,045.62-66,611.84

Finding the Fourth Proportional to 120,321.86, 166,045.62 and 66,611.84

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Solution

The fourth proportional to 120,321.86, 166,045.62 and 66,611.84 is: 91,925.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,321.86 : 166,045.62 = 66,611.84 : x
  2. Step 2: Convert to fraction form
    120,321.86/166,045.62 = 66,611.84/x
  3. Step 3: Cross multiply
    120,321.86x = 166,045.62 × 66,611.84
  4. Step 4: Simplify right side
    120,321.86x = 11,060,604,272.14
  5. Step 5: Solve for x
    x = 11,060,604,272.14/120,321.86
  6. Step 6: Final answer
    x = 91,925.14

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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.