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Finding the Fourth Proportional to 117,279.78, 175,919.60 and 47,142.69

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Solution

The fourth proportional to 117,279.78, 175,919.60 and 47,142.69 is: 70,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,279.78 : 175,919.60 = 47,142.69 : x
  2. Step 2: Convert to fraction form
    117,279.78/175,919.60 = 47,142.69/x
  3. Step 3: Cross multiply
    117,279.78x = 175,919.60 × 47,142.69
  4. Step 4: Simplify right side
    117,279.78x = 8,293,322,932.01
  5. Step 5: Solve for x
    x = 8,293,322,932.01/117,279.78
  6. Step 6: Final answer
    x = 70,714.00

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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.