Home / 205,538.20-308,120.45-79,097.81

Finding the Fourth Proportional to 205,538.20, 308,120.45 and 79,097.81

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Solution

The fourth proportional to 205,538.20, 308,120.45 and 79,097.81 is: 118,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,538.20 : 308,120.45 = 79,097.81 : x
  2. Step 2: Convert to fraction form
    205,538.20/308,120.45 = 79,097.81/x
  3. Step 3: Cross multiply
    205,538.20x = 308,120.45 × 79,097.81
  4. Step 4: Simplify right side
    205,538.20x = 24,371,652,415.73
  5. Step 5: Solve for x
    x = 24,371,652,415.73/205,538.20
  6. Step 6: Final answer
    x = 118,574.81

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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.