Home / 189,776.15-261,896.66-103,739.89

Finding the Fourth Proportional to 189,776.15, 261,896.66 and 103,739.89

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Solution

The fourth proportional to 189,776.15, 261,896.66 and 103,739.89 is: 143,164.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,776.15 : 261,896.66 = 103,739.89 : x
  2. Step 2: Convert to fraction form
    189,776.15/261,896.66 = 103,739.89/x
  3. Step 3: Cross multiply
    189,776.15x = 261,896.66 × 103,739.89
  4. Step 4: Simplify right side
    189,776.15x = 27,169,128,871.58
  5. Step 5: Solve for x
    x = 27,169,128,871.58/189,776.15
  6. Step 6: Final answer
    x = 143,164.09

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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.