Home / 120,221.60-179,986.80-73,565.60

Finding the Fourth Proportional to 120,221.60, 179,986.80 and 73,565.60

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Solution

The fourth proportional to 120,221.60, 179,986.80 and 73,565.60 is: 110,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,221.60 : 179,986.80 = 73,565.60 : x
  2. Step 2: Convert to fraction form
    120,221.60/179,986.80 = 73,565.60/x
  3. Step 3: Cross multiply
    120,221.60x = 179,986.80 × 73,565.60
  4. Step 4: Simplify right side
    120,221.60x = 13,240,836,934.08
  5. Step 5: Solve for x
    x = 13,240,836,934.08/120,221.60
  6. Step 6: Final answer
    x = 110,136.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.