Home / 74,149.12-111,223.68-18,745.12

Finding the Fourth Proportional to 74,149.12, 111,223.68 and 18,745.12

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Solution

The fourth proportional to 74,149.12, 111,223.68 and 18,745.12 is: 28,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.12 : 111,223.68 = 18,745.12 : x
  2. Step 2: Convert to fraction form
    74,149.12/111,223.68 = 18,745.12/x
  3. Step 3: Cross multiply
    74,149.12x = 111,223.68 × 18,745.12
  4. Step 4: Simplify right side
    74,149.12x = 2,084,901,228.44
  5. Step 5: Solve for x
    x = 2,084,901,228.44/74,149.12
  6. Step 6: Final answer
    x = 28,117.68

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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.