Home / 190,739.76-263,218.32-105,855

Finding the Fourth Proportional to 190,739.76, 263,218.32 and 105,855

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Solution

The fourth proportional to 190,739.76, 263,218.32 and 105,855 is: 146,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,739.76 : 263,218.32 = 105,855 : x
  2. Step 2: Convert to fraction form
    190,739.76/263,218.32 = 105,855/x
  3. Step 3: Cross multiply
    190,739.76x = 263,218.32 × 105,855
  4. Step 4: Simplify right side
    190,739.76x = 27,862,975,263.60
  5. Step 5: Solve for x
    x = 27,862,975,263.60/190,739.76
  6. Step 6: Final answer
    x = 146,078.49

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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.