Home / 190,530.20-262,918.86-105,644.12

Finding the Fourth Proportional to 190,530.20, 262,918.86 and 105,644.12

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Solution

The fourth proportional to 190,530.20, 262,918.86 and 105,644.12 is: 145,781.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,530.20 : 262,918.86 = 105,644.12 : x
  2. Step 2: Convert to fraction form
    190,530.20/262,918.86 = 105,644.12/x
  3. Step 3: Cross multiply
    190,530.20x = 262,918.86 × 105,644.12
  4. Step 4: Simplify right side
    190,530.20x = 27,775,831,596.10
  5. Step 5: Solve for x
    x = 27,775,831,596.10/190,530.20
  6. Step 6: Final answer
    x = 145,781.78

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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.