Home / 121,835.42-168,179.11-109,065.60

Finding the Fourth Proportional to 121,835.42, 168,179.11 and 109,065.60

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Solution

The fourth proportional to 121,835.42, 168,179.11 and 109,065.60 is: 150,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,835.42 : 168,179.11 = 109,065.60 : x
  2. Step 2: Convert to fraction form
    121,835.42/168,179.11 = 109,065.60/x
  3. Step 3: Cross multiply
    121,835.42x = 168,179.11 × 109,065.60
  4. Step 4: Simplify right side
    121,835.42x = 18,342,555,266.95
  5. Step 5: Solve for x
    x = 18,342,555,266.95/121,835.42
  6. Step 6: Final answer
    x = 150,551.92

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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.