Home / 190,104.05-262,316.13-105,220.91

Finding the Fourth Proportional to 190,104.05, 262,316.13 and 105,220.91

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Solution

The fourth proportional to 190,104.05, 262,316.13 and 105,220.91 is: 145,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,104.05 : 262,316.13 = 105,220.91 : x
  2. Step 2: Convert to fraction form
    190,104.05/262,316.13 = 105,220.91/x
  3. Step 3: Cross multiply
    190,104.05x = 262,316.13 × 105,220.91
  4. Step 4: Simplify right side
    190,104.05x = 27,601,141,906.28
  5. Step 5: Solve for x
    x = 27,601,141,906.28/190,104.05
  6. Step 6: Final answer
    x = 145,189.66

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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.