Home / 143,082.55-197,462.88-79,421.41

Finding the Fourth Proportional to 143,082.55, 197,462.88 and 79,421.41

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Solution

The fourth proportional to 143,082.55, 197,462.88 and 79,421.41 is: 109,606.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,082.55 : 197,462.88 = 79,421.41 : x
  2. Step 2: Convert to fraction form
    143,082.55/197,462.88 = 79,421.41/x
  3. Step 3: Cross multiply
    143,082.55x = 197,462.88 × 79,421.41
  4. Step 4: Simplify right side
    143,082.55x = 15,682,780,352.26
  5. Step 5: Solve for x
    x = 15,682,780,352.26/143,082.55
  6. Step 6: Final answer
    x = 109,606.52

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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.