Home / 206,619.15-310,048.38-86,665.44

Finding the Fourth Proportional to 206,619.15, 310,048.38 and 86,665.44

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Solution

The fourth proportional to 206,619.15, 310,048.38 and 86,665.44 is: 130,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,619.15 : 310,048.38 = 86,665.44 : x
  2. Step 2: Convert to fraction form
    206,619.15/310,048.38 = 86,665.44/x
  3. Step 3: Cross multiply
    206,619.15x = 310,048.38 × 86,665.44
  4. Step 4: Simplify right side
    206,619.15x = 26,870,479,273.99
  5. Step 5: Solve for x
    x = 26,870,479,273.99/206,619.15
  6. Step 6: Final answer
    x = 130,048.35

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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.