Home / 103,631.24-155,271.90-82,811

Finding the Fourth Proportional to 103,631.24, 155,271.90 and 82,811

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Solution

The fourth proportional to 103,631.24, 155,271.90 and 82,811 is: 124,076.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.24 : 155,271.90 = 82,811 : x
  2. Step 2: Convert to fraction form
    103,631.24/155,271.90 = 82,811/x
  3. Step 3: Cross multiply
    103,631.24x = 155,271.90 × 82,811
  4. Step 4: Simplify right side
    103,631.24x = 12,858,221,310.90
  5. Step 5: Solve for x
    x = 12,858,221,310.90/103,631.24
  6. Step 6: Final answer
    x = 124,076.69

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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.