Home / 107,927.16-161,874.94-78,083.72

Finding the Fourth Proportional to 107,927.16, 161,874.94 and 78,083.72

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Solution

The fourth proportional to 107,927.16, 161,874.94 and 78,083.72 is: 117,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,927.16 : 161,874.94 = 78,083.72 : x
  2. Step 2: Convert to fraction form
    107,927.16/161,874.94 = 78,083.72/x
  3. Step 3: Cross multiply
    107,927.16x = 161,874.94 × 78,083.72
  4. Step 4: Simplify right side
    107,927.16x = 12,639,797,489.98
  5. Step 5: Solve for x
    x = 12,639,797,489.98/107,927.16
  6. Step 6: Final answer
    x = 117,114.15

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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.