Home / 209,105.28-288,565.60-113,611.94

Finding the Fourth Proportional to 209,105.28, 288,565.60 and 113,611.94

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Solution

The fourth proportional to 209,105.28, 288,565.60 and 113,611.94 is: 156,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,105.28 : 288,565.60 = 113,611.94 : x
  2. Step 2: Convert to fraction form
    209,105.28/288,565.60 = 113,611.94/x
  3. Step 3: Cross multiply
    209,105.28x = 288,565.60 × 113,611.94
  4. Step 4: Simplify right side
    209,105.28x = 32,784,497,633.26
  5. Step 5: Solve for x
    x = 32,784,497,633.26/209,105.28
  6. Step 6: Final answer
    x = 156,784.65

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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.