Home / 272,085.06-408,136.82-72,405.65

Finding the Fourth Proportional to 272,085.06, 408,136.82 and 72,405.65

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Solution

The fourth proportional to 272,085.06, 408,136.82 and 72,405.65 is: 108,610.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,085.06 : 408,136.82 = 72,405.65 : x
  2. Step 2: Convert to fraction form
    272,085.06/408,136.82 = 72,405.65/x
  3. Step 3: Cross multiply
    272,085.06x = 408,136.82 × 72,405.65
  4. Step 4: Simplify right side
    272,085.06x = 29,551,409,338.32
  5. Step 5: Solve for x
    x = 29,551,409,338.32/272,085.06
  6. Step 6: Final answer
    x = 108,610.92

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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.