Home / 143,274.87-197,717.90-79,611.30

Finding the Fourth Proportional to 143,274.87, 197,717.90 and 79,611.30

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Solution

The fourth proportional to 143,274.87, 197,717.90 and 79,611.30 is: 109,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,274.87 : 197,717.90 = 79,611.30 : x
  2. Step 2: Convert to fraction form
    143,274.87/197,717.90 = 79,611.30/x
  3. Step 3: Cross multiply
    143,274.87x = 197,717.90 × 79,611.30
  4. Step 4: Simplify right side
    143,274.87x = 15,740,578,654.21
  5. Step 5: Solve for x
    x = 15,740,578,654.21/143,274.87
  6. Step 6: Final answer
    x = 109,862.80

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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.