Home / 205,825.06-308,774.40-72,782.56

Finding the Fourth Proportional to 205,825.06, 308,774.40 and 72,782.56

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Solution

The fourth proportional to 205,825.06, 308,774.40 and 72,782.56 is: 109,186.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,825.06 : 308,774.40 = 72,782.56 : x
  2. Step 2: Convert to fraction form
    205,825.06/308,774.40 = 72,782.56/x
  3. Step 3: Cross multiply
    205,825.06x = 308,774.40 × 72,782.56
  4. Step 4: Simplify right side
    205,825.06x = 22,473,391,294.46
  5. Step 5: Solve for x
    x = 22,473,391,294.46/205,825.06
  6. Step 6: Final answer
    x = 109,186.86

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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.