Home / 205,055.30-307,626.15-86,665.70

Finding the Fourth Proportional to 205,055.30, 307,626.15 and 86,665.70

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Solution

The fourth proportional to 205,055.30, 307,626.15 and 86,665.70 is: 130,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,055.30 : 307,626.15 = 86,665.70 : x
  2. Step 2: Convert to fraction form
    205,055.30/307,626.15 = 86,665.70/x
  3. Step 3: Cross multiply
    205,055.30x = 307,626.15 × 86,665.70
  4. Step 4: Simplify right side
    205,055.30x = 26,660,635,628.06
  5. Step 5: Solve for x
    x = 26,660,635,628.06/205,055.30
  6. Step 6: Final answer
    x = 130,016.81

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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.