Home / 120,016.17-165,611.12-76,919.58

Finding the Fourth Proportional to 120,016.17, 165,611.12 and 76,919.58

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Solution

The fourth proportional to 120,016.17, 165,611.12 and 76,919.58 is: 106,141.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,016.17 : 165,611.12 = 76,919.58 : x
  2. Step 2: Convert to fraction form
    120,016.17/165,611.12 = 76,919.58/x
  3. Step 3: Cross multiply
    120,016.17x = 165,611.12 × 76,919.58
  4. Step 4: Simplify right side
    120,016.17x = 12,738,737,409.13
  5. Step 5: Solve for x
    x = 12,738,737,409.13/120,016.17
  6. Step 6: Final answer
    x = 106,141.84

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1.5x scale

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.