Home / 205,378.18-308,102.30-91,567.28

Finding the Fourth Proportional to 205,378.18, 308,102.30 and 91,567.28

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Solution

The fourth proportional to 205,378.18, 308,102.30 and 91,567.28 is: 137,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,378.18 : 308,102.30 = 91,567.28 : x
  2. Step 2: Convert to fraction form
    205,378.18/308,102.30 = 91,567.28/x
  3. Step 3: Cross multiply
    205,378.18x = 308,102.30 × 91,567.28
  4. Step 4: Simplify right side
    205,378.18x = 28,212,090,571.92
  5. Step 5: Solve for x
    x = 28,212,090,571.92/205,378.18
  6. Step 6: Final answer
    x = 137,366.54

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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.