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Finding the Fourth Proportional to 270,683.37, 406,081.08 and 81,136.08

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Solution

The fourth proportional to 270,683.37, 406,081.08 and 81,136.08 is: 121,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,683.37 : 406,081.08 = 81,136.08 : x
  2. Step 2: Convert to fraction form
    270,683.37/406,081.08 = 81,136.08/x
  3. Step 3: Cross multiply
    270,683.37x = 406,081.08 × 81,136.08
  4. Step 4: Simplify right side
    270,683.37x = 32,947,826,993.37
  5. Step 5: Solve for x
    x = 32,947,826,993.37/270,683.37
  6. Step 6: Final answer
    x = 121,720.91

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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.