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Finding the Fourth Proportional to 117,813.20, 176,428.20 and 75,628.40

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Solution

The fourth proportional to 117,813.20, 176,428.20 and 75,628.40 is: 113,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,813.20 : 176,428.20 = 75,628.40 : x
  2. Step 2: Convert to fraction form
    117,813.20/176,428.20 = 75,628.40/x
  3. Step 3: Cross multiply
    117,813.20x = 176,428.20 × 75,628.40
  4. Step 4: Simplify right side
    117,813.20x = 13,342,982,480.88
  5. Step 5: Solve for x
    x = 13,342,982,480.88/117,813.20
  6. Step 6: Final answer
    x = 113,255.41

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1.5x scale

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.