Home / 204,920.30-307,423.65-86,530.70

Finding the Fourth Proportional to 204,920.30, 307,423.65 and 86,530.70

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Solution

The fourth proportional to 204,920.30, 307,423.65 and 86,530.70 is: 129,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,920.30 : 307,423.65 = 86,530.70 : x
  2. Step 2: Convert to fraction form
    204,920.30/307,423.65 = 86,530.70/x
  3. Step 3: Cross multiply
    204,920.30x = 307,423.65 × 86,530.70
  4. Step 4: Simplify right side
    204,920.30x = 26,601,583,631.06
  5. Step 5: Solve for x
    x = 26,601,583,631.06/204,920.30
  6. Step 6: Final answer
    x = 129,814.29

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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.