Home / 205,824.06-308,772.90-72,781.56

Finding the Fourth Proportional to 205,824.06, 308,772.90 and 72,781.56

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Solution

The fourth proportional to 205,824.06, 308,772.90 and 72,781.56 is: 109,185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,824.06 : 308,772.90 = 72,781.56 : x
  2. Step 2: Convert to fraction form
    205,824.06/308,772.90 = 72,781.56/x
  3. Step 3: Cross multiply
    205,824.06x = 308,772.90 × 72,781.56
  4. Step 4: Simplify right side
    205,824.06x = 22,472,973,347.72
  5. Step 5: Solve for x
    x = 22,472,973,347.72/205,824.06
  6. Step 6: Final answer
    x = 109,185.36

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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.