Home / 202,108.10-278,911.38-111,467.90

Finding the Fourth Proportional to 202,108.10, 278,911.38 and 111,467.90

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Solution

The fourth proportional to 202,108.10, 278,911.38 and 111,467.90 is: 153,826.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,108.10 : 278,911.38 = 111,467.90 : x
  2. Step 2: Convert to fraction form
    202,108.10/278,911.38 = 111,467.90/x
  3. Step 3: Cross multiply
    202,108.10x = 278,911.38 × 111,467.90
  4. Step 4: Simplify right side
    202,108.10x = 31,089,665,814.70
  5. Step 5: Solve for x
    x = 31,089,665,814.70/202,108.10
  6. Step 6: Final answer
    x = 153,826.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.