Home / 143,028.07-197,380.86-79,369.96

Finding the Fourth Proportional to 143,028.07, 197,380.86 and 79,369.96

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Solution

The fourth proportional to 143,028.07, 197,380.86 and 79,369.96 is: 109,531.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,028.07 : 197,380.86 = 79,369.96 : x
  2. Step 2: Convert to fraction form
    143,028.07/197,380.86 = 79,369.96/x
  3. Step 3: Cross multiply
    143,028.07x = 197,380.86 × 79,369.96
  4. Step 4: Simplify right side
    143,028.07x = 15,666,110,962.97
  5. Step 5: Solve for x
    x = 15,666,110,962.97/143,028.07
  6. Step 6: Final answer
    x = 109,531.72

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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.