Home / 130,936.21-196,490.42-71,813.38

Finding the Fourth Proportional to 130,936.21, 196,490.42 and 71,813.38

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Solution

The fourth proportional to 130,936.21, 196,490.42 and 71,813.38 is: 107,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,936.21 : 196,490.42 = 71,813.38 : x
  2. Step 2: Convert to fraction form
    130,936.21/196,490.42 = 71,813.38/x
  3. Step 3: Cross multiply
    130,936.21x = 196,490.42 × 71,813.38
  4. Step 4: Simplify right side
    130,936.21x = 14,110,641,197.82
  5. Step 5: Solve for x
    x = 14,110,641,197.82/130,936.21
  6. Step 6: Final answer
    x = 107,767.30

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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.