Home / 74,147.12-111,220.68-18,743.12

Finding the Fourth Proportional to 74,147.12, 111,220.68 and 18,743.12

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Solution

The fourth proportional to 74,147.12, 111,220.68 and 18,743.12 is: 28,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,147.12 : 111,220.68 = 18,743.12 : x
  2. Step 2: Convert to fraction form
    74,147.12/111,220.68 = 18,743.12/x
  3. Step 3: Cross multiply
    74,147.12x = 111,220.68 × 18,743.12
  4. Step 4: Simplify right side
    74,147.12x = 2,084,622,551.72
  5. Step 5: Solve for x
    x = 2,084,622,551.72/74,147.12
  6. Step 6: Final answer
    x = 28,114.68

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1.5x scale

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.