Home / 113,977.20-170,658.60-82,642.80

Finding the Fourth Proportional to 113,977.20, 170,658.60 and 82,642.80

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Solution

The fourth proportional to 113,977.20, 170,658.60 and 82,642.80 is: 123,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,977.20 : 170,658.60 = 82,642.80 : x
  2. Step 2: Convert to fraction form
    113,977.20/170,658.60 = 82,642.80/x
  3. Step 3: Cross multiply
    113,977.20x = 170,658.60 × 82,642.80
  4. Step 4: Simplify right side
    113,977.20x = 14,103,704,548.08
  5. Step 5: Solve for x
    x = 14,103,704,548.08/113,977.20
  6. Step 6: Final answer
    x = 123,741.45

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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.