Home / 205,412.93-307,922.56-86,921.27

Finding the Fourth Proportional to 205,412.93, 307,922.56 and 86,921.27

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Solution

The fourth proportional to 205,412.93, 307,922.56 and 86,921.27 is: 130,298.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,412.93 : 307,922.56 = 86,921.27 : x
  2. Step 2: Convert to fraction form
    205,412.93/307,922.56 = 86,921.27/x
  3. Step 3: Cross multiply
    205,412.93x = 307,922.56 × 86,921.27
  4. Step 4: Simplify right side
    205,412.93x = 26,765,018,219.94
  5. Step 5: Solve for x
    x = 26,765,018,219.94/205,412.93
  6. Step 6: Final answer
    x = 130,298.61

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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.