Home / 143,236.42-197,672.20-79,574.06

Finding the Fourth Proportional to 143,236.42, 197,672.20 and 79,574.06

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Solution

The fourth proportional to 143,236.42, 197,672.20 and 79,574.06 is: 109,815.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,236.42 : 197,672.20 = 79,574.06 : x
  2. Step 2: Convert to fraction form
    143,236.42/197,672.20 = 79,574.06/x
  3. Step 3: Cross multiply
    143,236.42x = 197,672.20 × 79,574.06
  4. Step 4: Simplify right side
    143,236.42x = 15,729,579,798.38
  5. Step 5: Solve for x
    x = 15,729,579,798.38/143,236.42
  6. Step 6: Final answer
    x = 109,815.51

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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.