Home / 209,917.18-289,688.75-114,423.90

Finding the Fourth Proportional to 209,917.18, 289,688.75 and 114,423.90

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Solution

The fourth proportional to 209,917.18, 289,688.75 and 114,423.90 is: 157,906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,917.18 : 289,688.75 = 114,423.90 : x
  2. Step 2: Convert to fraction form
    209,917.18/289,688.75 = 114,423.90/x
  3. Step 3: Cross multiply
    209,917.18x = 289,688.75 × 114,423.90
  4. Step 4: Simplify right side
    209,917.18x = 33,147,316,561.13
  5. Step 5: Solve for x
    x = 33,147,316,561.13/209,917.18
  6. Step 6: Final answer
    x = 157,906.64

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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.