Home / 82,178.72-123,561.50-75,683.33

Finding the Fourth Proportional to 82,178.72, 123,561.50 and 75,683.33

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Solution

The fourth proportional to 82,178.72, 123,561.50 and 75,683.33 is: 113,795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,178.72 : 123,561.50 = 75,683.33 : x
  2. Step 2: Convert to fraction form
    82,178.72/123,561.50 = 75,683.33/x
  3. Step 3: Cross multiply
    82,178.72x = 123,561.50 × 75,683.33
  4. Step 4: Simplify right side
    82,178.72x = 9,351,545,779.80
  5. Step 5: Solve for x
    x = 9,351,545,779.80/82,178.72
  6. Step 6: Final answer
    x = 113,795.22

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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.