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Finding the Fourth Proportional to 115,775.20, 173,662.80 and 114,546.40

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Solution

The fourth proportional to 115,775.20, 173,662.80 and 114,546.40 is: 171,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,775.20 : 173,662.80 = 114,546.40 : x
  2. Step 2: Convert to fraction form
    115,775.20/173,662.80 = 114,546.40/x
  3. Step 3: Cross multiply
    115,775.20x = 173,662.80 × 114,546.40
  4. Step 4: Simplify right side
    115,775.20x = 19,892,448,553.92
  5. Step 5: Solve for x
    x = 19,892,448,553.92/115,775.20
  6. Step 6: Final answer
    x = 171,819.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.