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Finding the Fourth Proportional to 190,695, 263,207.46 and 130,290.06

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Solution

The fourth proportional to 190,695, 263,207.46 and 130,290.06 is: 179,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,695 : 263,207.46 = 130,290.06 : x
  2. Step 2: Convert to fraction form
    190,695/263,207.46 = 130,290.06/x
  3. Step 3: Cross multiply
    190,695x = 263,207.46 × 130,290.06
  4. Step 4: Simplify right side
    190,695x = 34,293,315,755.85
  5. Step 5: Solve for x
    x = 34,293,315,755.85/190,695
  6. Step 6: Final answer
    x = 179,833.32

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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.