Home / 209,919.18-289,691.52-114,425.91

Finding the Fourth Proportional to 209,919.18, 289,691.52 and 114,425.91

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Solution

The fourth proportional to 209,919.18, 289,691.52 and 114,425.91 is: 157,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,919.18 : 289,691.52 = 114,425.91 : x
  2. Step 2: Convert to fraction form
    209,919.18/289,691.52 = 114,425.91/x
  3. Step 3: Cross multiply
    209,919.18x = 289,691.52 × 114,425.91
  4. Step 4: Simplify right side
    209,919.18x = 33,148,215,795.28
  5. Step 5: Solve for x
    x = 33,148,215,795.28/209,919.18
  6. Step 6: Final answer
    x = 157,909.42

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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.