Home / 209,979.76-289,778.16-114,488.32

Finding the Fourth Proportional to 209,979.76, 289,778.16 and 114,488.32

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Solution

The fourth proportional to 209,979.76, 289,778.16 and 114,488.32 is: 157,997.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,979.76 : 289,778.16 = 114,488.32 : x
  2. Step 2: Convert to fraction form
    209,979.76/289,778.16 = 114,488.32/x
  3. Step 3: Cross multiply
    209,979.76x = 289,778.16 × 114,488.32
  4. Step 4: Simplify right side
    209,979.76x = 33,176,214,711.09
  5. Step 5: Solve for x
    x = 33,176,214,711.09/209,979.76
  6. Step 6: Final answer
    x = 157,997.20

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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.