Home / 189,664.61-261,755.24-103,636.65

Finding the Fourth Proportional to 189,664.61, 261,755.24 and 103,636.65

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Solution

The fourth proportional to 189,664.61, 261,755.24 and 103,636.65 is: 143,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,664.61 : 261,755.24 = 103,636.65 : x
  2. Step 2: Convert to fraction form
    189,664.61/261,755.24 = 103,636.65/x
  3. Step 3: Cross multiply
    189,664.61x = 261,755.24 × 103,636.65
  4. Step 4: Simplify right side
    189,664.61x = 27,127,435,675.36
  5. Step 5: Solve for x
    x = 27,127,435,675.36/189,664.61
  6. Step 6: Final answer
    x = 143,028.46

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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.