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Finding the Fourth Proportional to 115,425.70, 173,138.55 and 48,913.90

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Solution

The fourth proportional to 115,425.70, 173,138.55 and 48,913.90 is: 73,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,425.70 : 173,138.55 = 48,913.90 : x
  2. Step 2: Convert to fraction form
    115,425.70/173,138.55 = 48,913.90/x
  3. Step 3: Cross multiply
    115,425.70x = 173,138.55 × 48,913.90
  4. Step 4: Simplify right side
    115,425.70x = 8,468,881,720.85
  5. Step 5: Solve for x
    x = 8,468,881,720.85/115,425.70
  6. Step 6: Final answer
    x = 73,370.85

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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.