Home / 142,986.28-197,311.62-79,321.96

Finding the Fourth Proportional to 142,986.28, 197,311.62 and 79,321.96

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Solution

The fourth proportional to 142,986.28, 197,311.62 and 79,321.96 is: 109,459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,986.28 : 197,311.62 = 79,321.96 : x
  2. Step 2: Convert to fraction form
    142,986.28/197,311.62 = 79,321.96/x
  3. Step 3: Cross multiply
    142,986.28x = 197,311.62 × 79,321.96
  4. Step 4: Simplify right side
    142,986.28x = 15,651,144,429.18
  5. Step 5: Solve for x
    x = 15,651,144,429.18/142,986.28
  6. Step 6: Final answer
    x = 109,459.06

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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.