Home / 142,181.92-196,120.93-108,115.72

Finding the Fourth Proportional to 142,181.92, 196,120.93 and 108,115.72

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Solution

The fourth proportional to 142,181.92, 196,120.93 and 108,115.72 is: 149,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.92 : 196,120.93 = 108,115.72 : x
  2. Step 2: Convert to fraction form
    142,181.92/196,120.93 = 108,115.72/x
  3. Step 3: Cross multiply
    142,181.92x = 196,120.93 × 108,115.72
  4. Step 4: Simplify right side
    142,181.92x = 21,203,755,554.02
  5. Step 5: Solve for x
    x = 21,203,755,554.02/142,181.92
  6. Step 6: Final answer
    x = 149,131.17

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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.