Home / 202,198.05-279,038.65-111,555.20

Finding the Fourth Proportional to 202,198.05, 279,038.65 and 111,555.20

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Solution

The fourth proportional to 202,198.05, 279,038.65 and 111,555.20 is: 153,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,198.05 : 279,038.65 = 111,555.20 : x
  2. Step 2: Convert to fraction form
    202,198.05/279,038.65 = 111,555.20/x
  3. Step 3: Cross multiply
    202,198.05x = 279,038.65 × 111,555.20
  4. Step 4: Simplify right side
    202,198.05x = 31,128,212,408.48
  5. Step 5: Solve for x
    x = 31,128,212,408.48/202,198.05
  6. Step 6: Final answer
    x = 153,949.12

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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.