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Finding the Fourth Proportional to 135,344.80, 202,994.80 and 45,386.40

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Solution

The fourth proportional to 135,344.80, 202,994.80 and 45,386.40 is: 68,072.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,344.80 : 202,994.80 = 45,386.40 : x
  2. Step 2: Convert to fraction form
    135,344.80/202,994.80 = 45,386.40/x
  3. Step 3: Cross multiply
    135,344.80x = 202,994.80 × 45,386.40
  4. Step 4: Simplify right side
    135,344.80x = 9,213,203,190.72
  5. Step 5: Solve for x
    x = 9,213,203,190.72/135,344.80
  6. Step 6: Final answer
    x = 68,072.09

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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.