Home / 131,364.54-197,111.21-81,431.42

Finding the Fourth Proportional to 131,364.54, 197,111.21 and 81,431.42

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Solution

The fourth proportional to 131,364.54, 197,111.21 and 81,431.42 is: 122,187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,364.54 : 197,111.21 = 81,431.42 : x
  2. Step 2: Convert to fraction form
    131,364.54/197,111.21 = 81,431.42/x
  3. Step 3: Cross multiply
    131,364.54x = 197,111.21 × 81,431.42
  4. Step 4: Simplify right side
    131,364.54x = 16,051,044,335.51
  5. Step 5: Solve for x
    x = 16,051,044,335.51/131,364.54
  6. Step 6: Final answer
    x = 122,187.04

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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.