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Finding the Fourth Proportional to 143,141.70, 214,712.55 and 131,736.90

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Solution

The fourth proportional to 143,141.70, 214,712.55 and 131,736.90 is: 197,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,141.70 : 214,712.55 = 131,736.90 : x
  2. Step 2: Convert to fraction form
    143,141.70/214,712.55 = 131,736.90/x
  3. Step 3: Cross multiply
    143,141.70x = 214,712.55 × 131,736.90
  4. Step 4: Simplify right side
    143,141.70x = 28,285,565,728.10
  5. Step 5: Solve for x
    x = 28,285,565,728.10/143,141.70
  6. Step 6: Final answer
    x = 197,605.35

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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.