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Finding the Fourth Proportional to 143,347.92, 197,816.22 and 79,684.08

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Solution

The fourth proportional to 143,347.92, 197,816.22 and 79,684.08 is: 109,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,347.92 : 197,816.22 = 79,684.08 : x
  2. Step 2: Convert to fraction form
    143,347.92/197,816.22 = 79,684.08/x
  3. Step 3: Cross multiply
    143,347.92x = 197,816.22 × 79,684.08
  4. Step 4: Simplify right side
    143,347.92x = 15,762,803,499.78
  5. Step 5: Solve for x
    x = 15,762,803,499.78/143,347.92
  6. Step 6: Final answer
    x = 109,961.86

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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.