Home / 131,297.14-196,905.61-86,316.63

Finding the Fourth Proportional to 131,297.14, 196,905.61 and 86,316.63

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Solution

The fourth proportional to 131,297.14, 196,905.61 and 86,316.63 is: 129,448.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,297.14 : 196,905.61 = 86,316.63 : x
  2. Step 2: Convert to fraction form
    131,297.14/196,905.61 = 86,316.63/x
  3. Step 3: Cross multiply
    131,297.14x = 196,905.61 × 86,316.63
  4. Step 4: Simplify right side
    131,297.14x = 16,996,228,683.29
  5. Step 5: Solve for x
    x = 16,996,228,683.29/131,297.14
  6. Step 6: Final answer
    x = 129,448.58

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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.