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Finding the Fourth Proportional to 117,955.20, 176,932.80 and 39,081.60

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Solution

The fourth proportional to 117,955.20, 176,932.80 and 39,081.60 is: 58,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,955.20 : 176,932.80 = 39,081.60 : x
  2. Step 2: Convert to fraction form
    117,955.20/176,932.80 = 39,081.60/x
  3. Step 3: Cross multiply
    117,955.20x = 176,932.80 × 39,081.60
  4. Step 4: Simplify right side
    117,955.20x = 6,914,816,916.48
  5. Step 5: Solve for x
    x = 6,914,816,916.48/117,955.20
  6. Step 6: Final answer
    x = 58,622.40

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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.