Home / 204,639.96-307,001.70-86,311.08

Finding the Fourth Proportional to 204,639.96, 307,001.70 and 86,311.08

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Solution

The fourth proportional to 204,639.96, 307,001.70 and 86,311.08 is: 129,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,639.96 : 307,001.70 = 86,311.08 : x
  2. Step 2: Convert to fraction form
    204,639.96/307,001.70 = 86,311.08/x
  3. Step 3: Cross multiply
    204,639.96x = 307,001.70 × 86,311.08
  4. Step 4: Simplify right side
    204,639.96x = 26,497,648,288.84
  5. Step 5: Solve for x
    x = 26,497,648,288.84/204,639.96
  6. Step 6: Final answer
    x = 129,484.23

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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.