Home / 131,362.17-197,107.44-81,428.91

Finding the Fourth Proportional to 131,362.17, 197,107.44 and 81,428.91

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Solution

The fourth proportional to 131,362.17, 197,107.44 and 81,428.91 is: 122,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,362.17 : 197,107.44 = 81,428.91 : x
  2. Step 2: Convert to fraction form
    131,362.17/197,107.44 = 81,428.91/x
  3. Step 3: Cross multiply
    131,362.17x = 197,107.44 × 81,428.91
  4. Step 4: Simplify right side
    131,362.17x = 16,050,243,992.09
  5. Step 5: Solve for x
    x = 16,050,243,992.09/131,362.17
  6. Step 6: Final answer
    x = 122,183.15

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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.