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Finding the Fourth Proportional to 117,171.72, 175,756.02 and 28,425.96

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Solution

The fourth proportional to 117,171.72, 175,756.02 and 28,425.96 is: 42,638.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,171.72 : 175,756.02 = 28,425.96 : x
  2. Step 2: Convert to fraction form
    117,171.72/175,756.02 = 28,425.96/x
  3. Step 3: Cross multiply
    117,171.72x = 175,756.02 × 28,425.96
  4. Step 4: Simplify right side
    117,171.72x = 4,996,033,594.28
  5. Step 5: Solve for x
    x = 4,996,033,594.28/117,171.72
  6. Step 6: Final answer
    x = 42,638.56

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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.