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Finding the Fourth Proportional to 136,794.15, 188,771.01 and 85,834.32

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Solution

The fourth proportional to 136,794.15, 188,771.01 and 85,834.32 is: 118,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,794.15 : 188,771.01 = 85,834.32 : x
  2. Step 2: Convert to fraction form
    136,794.15/188,771.01 = 85,834.32/x
  3. Step 3: Cross multiply
    136,794.15x = 188,771.01 × 85,834.32
  4. Step 4: Simplify right side
    136,794.15x = 16,203,030,249.29
  5. Step 5: Solve for x
    x = 16,203,030,249.29/136,794.15
  6. Step 6: Final answer
    x = 118,448.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.