Home / 204,632.12-306,989.80-86,303.88

Finding the Fourth Proportional to 204,632.12, 306,989.80 and 86,303.88

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Solution

The fourth proportional to 204,632.12, 306,989.80 and 86,303.88 is: 129,473.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,632.12 : 306,989.80 = 86,303.88 : x
  2. Step 2: Convert to fraction form
    204,632.12/306,989.80 = 86,303.88/x
  3. Step 3: Cross multiply
    204,632.12x = 306,989.80 × 86,303.88
  4. Step 4: Simplify right side
    204,632.12x = 26,494,410,644.66
  5. Step 5: Solve for x
    x = 26,494,410,644.66/204,632.12
  6. Step 6: Final answer
    x = 129,473.37

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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.