Home / 190,861.13-263,400.23-105,978.80

Finding the Fourth Proportional to 190,861.13, 263,400.23 and 105,978.80

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Solution

The fourth proportional to 190,861.13, 263,400.23 and 105,978.80 is: 146,257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,861.13 : 263,400.23 = 105,978.80 : x
  2. Step 2: Convert to fraction form
    190,861.13/263,400.23 = 105,978.80/x
  3. Step 3: Cross multiply
    190,861.13x = 263,400.23 × 105,978.80
  4. Step 4: Simplify right side
    190,861.13x = 27,914,841,218.57
  5. Step 5: Solve for x
    x = 27,914,841,218.57/190,861.13
  6. Step 6: Final answer
    x = 146,257.34

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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.