Home / 131,057.29-196,252.39-86,617.45

Finding the Fourth Proportional to 131,057.29, 196,252.39 and 86,617.45

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Solution

The fourth proportional to 131,057.29, 196,252.39 and 86,617.45 is: 129,705.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,057.29 : 196,252.39 = 86,617.45 : x
  2. Step 2: Convert to fraction form
    131,057.29/196,252.39 = 86,617.45/x
  3. Step 3: Cross multiply
    131,057.29x = 196,252.39 × 86,617.45
  4. Step 4: Simplify right side
    131,057.29x = 16,998,881,578.21
  5. Step 5: Solve for x
    x = 16,998,881,578.21/131,057.29
  6. Step 6: Final answer
    x = 129,705.73

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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.