Home / 143,350.89-197,830.98-79,689.75

Finding the Fourth Proportional to 143,350.89, 197,830.98 and 79,689.75

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Solution

The fourth proportional to 143,350.89, 197,830.98 and 79,689.75 is: 109,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,350.89 : 197,830.98 = 79,689.75 : x
  2. Step 2: Convert to fraction form
    143,350.89/197,830.98 = 79,689.75/x
  3. Step 3: Cross multiply
    143,350.89x = 197,830.98 × 79,689.75
  4. Step 4: Simplify right side
    143,350.89x = 15,765,101,338.46
  5. Step 5: Solve for x
    x = 15,765,101,338.46/143,350.89
  6. Step 6: Final answer
    x = 109,975.61

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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.