Home / 123,136.20-184,412.70-83,478.60

Finding the Fourth Proportional to 123,136.20, 184,412.70 and 83,478.60

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Solution

The fourth proportional to 123,136.20, 184,412.70 and 83,478.60 is: 125,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,136.20 : 184,412.70 = 83,478.60 : x
  2. Step 2: Convert to fraction form
    123,136.20/184,412.70 = 83,478.60/x
  3. Step 3: Cross multiply
    123,136.20x = 184,412.70 × 83,478.60
  4. Step 4: Simplify right side
    123,136.20x = 15,394,514,018.22
  5. Step 5: Solve for x
    x = 15,394,514,018.22/123,136.20
  6. Step 6: Final answer
    x = 125,020.21

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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.