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Finding the Fourth Proportional to 143,437.99, 197,951.43 and 79,774.42

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Solution

The fourth proportional to 143,437.99, 197,951.43 and 79,774.42 is: 110,092.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,437.99 : 197,951.43 = 79,774.42 : x
  2. Step 2: Convert to fraction form
    143,437.99/197,951.43 = 79,774.42/x
  3. Step 3: Cross multiply
    143,437.99x = 197,951.43 × 79,774.42
  4. Step 4: Simplify right side
    143,437.99x = 15,791,460,516.42
  5. Step 5: Solve for x
    x = 15,791,460,516.42/143,437.99
  6. Step 6: Final answer
    x = 110,092.59

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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.