Home / 143,336.68-197,806.98-78,808.64

Finding the Fourth Proportional to 143,336.68, 197,806.98 and 78,808.64

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Solution

The fourth proportional to 143,336.68, 197,806.98 and 78,808.64 is: 108,757.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,336.68 : 197,806.98 = 78,808.64 : x
  2. Step 2: Convert to fraction form
    143,336.68/197,806.98 = 78,808.64/x
  3. Step 3: Cross multiply
    143,336.68x = 197,806.98 × 78,808.64
  4. Step 4: Simplify right side
    143,336.68x = 15,588,899,076.31
  5. Step 5: Solve for x
    x = 15,588,899,076.31/143,336.68
  6. Step 6: Final answer
    x = 108,757.22

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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.