Home / 81,293.02-122,548.83-75,874.12

Finding the Fourth Proportional to 81,293.02, 122,548.83 and 75,874.12

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Solution

The fourth proportional to 81,293.02, 122,548.83 and 75,874.12 is: 114,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.02 : 122,548.83 = 75,874.12 : x
  2. Step 2: Convert to fraction form
    81,293.02/122,548.83 = 75,874.12/x
  3. Step 3: Cross multiply
    81,293.02x = 122,548.83 × 75,874.12
  4. Step 4: Simplify right side
    81,293.02x = 9,298,284,210.22
  5. Step 5: Solve for x
    x = 9,298,284,210.22/81,293.02
  6. Step 6: Final answer
    x = 114,379.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.