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Finding the Fourth Proportional to 143,246.53, 197,474.92 and 100,672.93

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Solution

The fourth proportional to 143,246.53, 197,474.92 and 100,672.93 is: 138,784.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,246.53 : 197,474.92 = 100,672.93 : x
  2. Step 2: Convert to fraction form
    143,246.53/197,474.92 = 100,672.93/x
  3. Step 3: Cross multiply
    143,246.53x = 197,474.92 × 100,672.93
  4. Step 4: Simplify right side
    143,246.53x = 19,880,378,797.92
  5. Step 5: Solve for x
    x = 19,880,378,797.92/143,246.53
  6. Step 6: Final answer
    x = 138,784.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.