Home / 121,986.72-182,977.92-47,123.28

Finding the Fourth Proportional to 121,986.72, 182,977.92 and 47,123.28

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Solution

The fourth proportional to 121,986.72, 182,977.92 and 47,123.28 is: 70,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,986.72 : 182,977.92 = 47,123.28 : x
  2. Step 2: Convert to fraction form
    121,986.72/182,977.92 = 47,123.28/x
  3. Step 3: Cross multiply
    121,986.72x = 182,977.92 × 47,123.28
  4. Step 4: Simplify right side
    121,986.72x = 8,622,519,757.98
  5. Step 5: Solve for x
    x = 8,622,519,757.98/121,986.72
  6. Step 6: Final answer
    x = 70,684.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.