Home / 82,365.72-123,315.09-54,201.07

Finding the Fourth Proportional to 82,365.72, 123,315.09 and 54,201.07

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Solution

The fourth proportional to 82,365.72, 123,315.09 and 54,201.07 is: 81,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,365.72 : 123,315.09 = 54,201.07 : x
  2. Step 2: Convert to fraction form
    82,365.72/123,315.09 = 54,201.07/x
  3. Step 3: Cross multiply
    82,365.72x = 123,315.09 × 54,201.07
  4. Step 4: Simplify right side
    82,365.72x = 6,683,809,825.15
  5. Step 5: Solve for x
    x = 6,683,809,825.15/82,365.72
  6. Step 6: Final answer
    x = 81,147.96

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1.5x scale

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.