Home / 205,321.37-307,928.59-86,931.77

Finding the Fourth Proportional to 205,321.37, 307,928.59 and 86,931.77

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Solution

The fourth proportional to 205,321.37, 307,928.59 and 86,931.77 is: 130,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,321.37 : 307,928.59 = 86,931.77 : x
  2. Step 2: Convert to fraction form
    205,321.37/307,928.59 = 86,931.77/x
  3. Step 3: Cross multiply
    205,321.37x = 307,928.59 × 86,931.77
  4. Step 4: Simplify right side
    205,321.37x = 26,768,775,605.33
  5. Step 5: Solve for x
    x = 26,768,775,605.33/205,321.37
  6. Step 6: Final answer
    x = 130,375.01

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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.