Home / 205,525.91-308,313.57-72,378.65

Finding the Fourth Proportional to 205,525.91, 308,313.57 and 72,378.65

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Solution

The fourth proportional to 205,525.91, 308,313.57 and 72,378.65 is: 108,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,525.91 : 308,313.57 = 72,378.65 : x
  2. Step 2: Convert to fraction form
    205,525.91/308,313.57 = 72,378.65/x
  3. Step 3: Cross multiply
    205,525.91x = 308,313.57 × 72,378.65
  4. Step 4: Simplify right side
    205,525.91x = 22,315,319,973.28
  5. Step 5: Solve for x
    x = 22,315,319,973.28/205,525.91
  6. Step 6: Final answer
    x = 108,576.68

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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.