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Finding the Fourth Proportional to 190,091.21, 285,142.14 and 71,736.17

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Solution

The fourth proportional to 190,091.21, 285,142.14 and 71,736.17 is: 107,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,091.21 : 285,142.14 = 71,736.17 : x
  2. Step 2: Convert to fraction form
    190,091.21/285,142.14 = 71,736.17/x
  3. Step 3: Cross multiply
    190,091.21x = 285,142.14 × 71,736.17
  4. Step 4: Simplify right side
    190,091.21x = 20,455,003,603.49
  5. Step 5: Solve for x
    x = 20,455,003,603.49/190,091.21
  6. Step 6: Final answer
    x = 107,606.26

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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.