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Finding the Fourth Proportional to 136,390.21, 188,224.32 and 75,960.84

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Solution

The fourth proportional to 136,390.21, 188,224.32 and 75,960.84 is: 104,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,390.21 : 188,224.32 = 75,960.84 : x
  2. Step 2: Convert to fraction form
    136,390.21/188,224.32 = 75,960.84/x
  3. Step 3: Cross multiply
    136,390.21x = 188,224.32 × 75,960.84
  4. Step 4: Simplify right side
    136,390.21x = 14,297,678,446.32
  5. Step 5: Solve for x
    x = 14,297,678,446.32/136,390.21
  6. Step 6: Final answer
    x = 104,829.22

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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.