Home / 131,694.37-197,153.77-81,613.51

Finding the Fourth Proportional to 131,694.37, 197,153.77 and 81,613.51

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Solution

The fourth proportional to 131,694.37, 197,153.77 and 81,613.51 is: 122,179.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,694.37 : 197,153.77 = 81,613.51 : x
  2. Step 2: Convert to fraction form
    131,694.37/197,153.77 = 81,613.51/x
  3. Step 3: Cross multiply
    131,694.37x = 197,153.77 × 81,613.51
  4. Step 4: Simplify right side
    131,694.37x = 16,090,411,179.43
  5. Step 5: Solve for x
    x = 16,090,411,179.43/131,694.37
  6. Step 6: Final answer
    x = 122,179.95

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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.