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Finding the Fourth Proportional to 129,879.64, 194,662.70 and 63,219.88

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Solution

The fourth proportional to 129,879.64, 194,662.70 and 63,219.88 is: 94,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,879.64 : 194,662.70 = 63,219.88 : x
  2. Step 2: Convert to fraction form
    129,879.64/194,662.70 = 63,219.88/x
  3. Step 3: Cross multiply
    129,879.64x = 194,662.70 × 63,219.88
  4. Step 4: Simplify right side
    129,879.64x = 12,306,552,534.48
  5. Step 5: Solve for x
    x = 12,306,552,534.48/129,879.64
  6. Step 6: Final answer
    x = 94,753.52

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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.