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Finding the Fourth Proportional to 135,002.40, 202,284.90 and 115,319.40

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Solution

The fourth proportional to 135,002.40, 202,284.90 and 115,319.40 is: 172,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,002.40 : 202,284.90 = 115,319.40 : x
  2. Step 2: Convert to fraction form
    135,002.40/202,284.90 = 115,319.40/x
  3. Step 3: Cross multiply
    135,002.40x = 202,284.90 × 115,319.40
  4. Step 4: Simplify right side
    135,002.40x = 23,327,373,297.06
  5. Step 5: Solve for x
    x = 23,327,373,297.06/135,002.40
  6. Step 6: Final answer
    x = 172,792.29

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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.