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Finding the Fourth Proportional to 205,525.70, 308,101.70 and 79,085.31

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Solution

The fourth proportional to 205,525.70, 308,101.70 and 79,085.31 is: 118,556.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,525.70 : 308,101.70 = 79,085.31 : x
  2. Step 2: Convert to fraction form
    205,525.70/308,101.70 = 79,085.31/x
  3. Step 3: Cross multiply
    205,525.70x = 308,101.70 × 79,085.31
  4. Step 4: Simplify right side
    205,525.70x = 24,366,318,060.60
  5. Step 5: Solve for x
    x = 24,366,318,060.60/205,525.70
  6. Step 6: Final answer
    x = 118,556.07

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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.