Home / 190,861.51-263,400.75-105,979.18

Finding the Fourth Proportional to 190,861.51, 263,400.75 and 105,979.18

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Solution

The fourth proportional to 190,861.51, 263,400.75 and 105,979.18 is: 146,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,861.51 : 263,400.75 = 105,979.18 : x
  2. Step 2: Convert to fraction form
    190,861.51/263,400.75 = 105,979.18/x
  3. Step 3: Cross multiply
    190,861.51x = 263,400.75 × 105,979.18
  4. Step 4: Simplify right side
    190,861.51x = 27,914,994,837.88
  5. Step 5: Solve for x
    x = 27,914,994,837.88/190,861.51
  6. Step 6: Final answer
    x = 146,257.86

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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.