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Finding the Fourth Proportional to 117,142.28, 175,711.86 and 28,396.56

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Solution

The fourth proportional to 117,142.28, 175,711.86 and 28,396.56 is: 42,594.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,142.28 : 175,711.86 = 28,396.56 : x
  2. Step 2: Convert to fraction form
    117,142.28/175,711.86 = 28,396.56/x
  3. Step 3: Cross multiply
    117,142.28x = 175,711.86 × 28,396.56
  4. Step 4: Simplify right side
    117,142.28x = 4,989,612,375.20
  5. Step 5: Solve for x
    x = 4,989,612,375.20/117,142.28
  6. Step 6: Final answer
    x = 42,594.46

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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.