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Finding the Fourth Proportional to 101,252.70, 151,878.96 and 31,131.90

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Solution

The fourth proportional to 101,252.70, 151,878.96 and 31,131.90 is: 46,697.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,252.70 : 151,878.96 = 31,131.90 : x
  2. Step 2: Convert to fraction form
    101,252.70/151,878.96 = 31,131.90/x
  3. Step 3: Cross multiply
    101,252.70x = 151,878.96 × 31,131.90
  4. Step 4: Simplify right side
    101,252.70x = 4,728,280,594.82
  5. Step 5: Solve for x
    x = 4,728,280,594.82/101,252.70
  6. Step 6: Final answer
    x = 46,697.82

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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.