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Finding the Fourth Proportional to 136,568.96, 204,705.36 and 69,917.64

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Solution

The fourth proportional to 136,568.96, 204,705.36 and 69,917.64 is: 104,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,568.96 : 204,705.36 = 69,917.64 : x
  2. Step 2: Convert to fraction form
    136,568.96/204,705.36 = 69,917.64/x
  3. Step 3: Cross multiply
    136,568.96x = 204,705.36 × 69,917.64
  4. Step 4: Simplify right side
    136,568.96x = 14,312,515,666.55
  5. Step 5: Solve for x
    x = 14,312,515,666.55/136,568.96
  6. Step 6: Final answer
    x = 104,800.65

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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.