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Finding the Fourth Proportional to 117,376.80, 176,065.20 and 28,629.60

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Solution

The fourth proportional to 117,376.80, 176,065.20 and 28,629.60 is: 42,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,376.80 : 176,065.20 = 28,629.60 : x
  2. Step 2: Convert to fraction form
    117,376.80/176,065.20 = 28,629.60/x
  3. Step 3: Cross multiply
    117,376.80x = 176,065.20 × 28,629.60
  4. Step 4: Simplify right side
    117,376.80x = 5,040,676,249.92
  5. Step 5: Solve for x
    x = 5,040,676,249.92/117,376.80
  6. Step 6: Final answer
    x = 42,944.40

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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.