Home / 120,823.30-166,731.51-67,111.74

Finding the Fourth Proportional to 120,823.30, 166,731.51 and 67,111.74

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Solution

The fourth proportional to 120,823.30, 166,731.51 and 67,111.74 is: 92,611.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,823.30 : 166,731.51 = 67,111.74 : x
  2. Step 2: Convert to fraction form
    120,823.30/166,731.51 = 67,111.74/x
  3. Step 3: Cross multiply
    120,823.30x = 166,731.51 × 67,111.74
  4. Step 4: Simplify right side
    120,823.30x = 11,189,642,000.60
  5. Step 5: Solve for x
    x = 11,189,642,000.60/120,823.30
  6. Step 6: Final answer
    x = 92,611.63

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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.