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Finding the Fourth Proportional to 117,944.80, 176,917.20 and 68,178.40

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Solution

The fourth proportional to 117,944.80, 176,917.20 and 68,178.40 is: 102,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,944.80 : 176,917.20 = 68,178.40 : x
  2. Step 2: Convert to fraction form
    117,944.80/176,917.20 = 68,178.40/x
  3. Step 3: Cross multiply
    117,944.80x = 176,917.20 × 68,178.40
  4. Step 4: Simplify right side
    117,944.80x = 12,061,931,628.48
  5. Step 5: Solve for x
    x = 12,061,931,628.48/117,944.80
  6. Step 6: Final answer
    x = 102,267.60

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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.