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Finding the Fourth Proportional to 202,168.60, 303,425.70 and 90,021.40

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Solution

The fourth proportional to 202,168.60, 303,425.70 and 90,021.40 is: 135,109.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,168.60 : 303,425.70 = 90,021.40 : x
  2. Step 2: Convert to fraction form
    202,168.60/303,425.70 = 90,021.40/x
  3. Step 3: Cross multiply
    202,168.60x = 303,425.70 × 90,021.40
  4. Step 4: Simplify right side
    202,168.60x = 27,314,806,309.98
  5. Step 5: Solve for x
    x = 27,314,806,309.98/202,168.60
  6. Step 6: Final answer
    x = 135,109.04

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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.