Home / 189,769.58-261,883.04-103,728.68

Finding the Fourth Proportional to 189,769.58, 261,883.04 and 103,728.68

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Solution

The fourth proportional to 189,769.58, 261,883.04 and 103,728.68 is: 143,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,769.58 : 261,883.04 = 103,728.68 : x
  2. Step 2: Convert to fraction form
    189,769.58/261,883.04 = 103,728.68/x
  3. Step 3: Cross multiply
    189,769.58x = 261,883.04 × 103,728.68
  4. Step 4: Simplify right side
    189,769.58x = 27,164,782,053.59
  5. Step 5: Solve for x
    x = 27,164,782,053.59/189,769.58
  6. Step 6: Final answer
    x = 143,146.14

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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.