Home / 205,967.40-308,956.86-72,828.84

Finding the Fourth Proportional to 205,967.40, 308,956.86 and 72,828.84

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Solution

The fourth proportional to 205,967.40, 308,956.86 and 72,828.84 is: 109,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,967.40 : 308,956.86 = 72,828.84 : x
  2. Step 2: Convert to fraction form
    205,967.40/308,956.86 = 72,828.84/x
  3. Step 3: Cross multiply
    205,967.40x = 308,956.86 × 72,828.84
  4. Step 4: Simplify right side
    205,967.40x = 22,500,969,723.84
  5. Step 5: Solve for x
    x = 22,500,969,723.84/205,967.40
  6. Step 6: Final answer
    x = 109,245.30

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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.