Home / 205,301.40-307,908.90-86,976.60

Finding the Fourth Proportional to 205,301.40, 307,908.90 and 86,976.60

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Solution

The fourth proportional to 205,301.40, 307,908.90 and 86,976.60 is: 130,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,301.40 : 307,908.90 = 86,976.60 : x
  2. Step 2: Convert to fraction form
    205,301.40/307,908.90 = 86,976.60/x
  3. Step 3: Cross multiply
    205,301.40x = 307,908.90 × 86,976.60
  4. Step 4: Simplify right side
    205,301.40x = 26,780,869,231.74
  5. Step 5: Solve for x
    x = 26,780,869,231.74/205,301.40
  6. Step 6: Final answer
    x = 130,446.60

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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.