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Finding the Fourth Proportional to 115,115.60, 172,673.40 and 68,344.40

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Solution

The fourth proportional to 115,115.60, 172,673.40 and 68,344.40 is: 102,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,115.60 : 172,673.40 = 68,344.40 : x
  2. Step 2: Convert to fraction form
    115,115.60/172,673.40 = 68,344.40/x
  3. Step 3: Cross multiply
    115,115.60x = 172,673.40 × 68,344.40
  4. Step 4: Simplify right side
    115,115.60x = 11,801,259,918.96
  5. Step 5: Solve for x
    x = 11,801,259,918.96/115,115.60
  6. Step 6: Final answer
    x = 102,516.60

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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.