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Finding the Fourth Proportional to 202,113.40, 303,170.10 and 83,745.40

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Solution

The fourth proportional to 202,113.40, 303,170.10 and 83,745.40 is: 125,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,113.40 : 303,170.10 = 83,745.40 : x
  2. Step 2: Convert to fraction form
    202,113.40/303,170.10 = 83,745.40/x
  3. Step 3: Cross multiply
    202,113.40x = 303,170.10 × 83,745.40
  4. Step 4: Simplify right side
    202,113.40x = 25,389,101,292.54
  5. Step 5: Solve for x
    x = 25,389,101,292.54/202,113.40
  6. Step 6: Final answer
    x = 125,618.10

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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.