Home / 189,727.72-261,821.06-103,684.80

Finding the Fourth Proportional to 189,727.72, 261,821.06 and 103,684.80

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Solution

The fourth proportional to 189,727.72, 261,821.06 and 103,684.80 is: 143,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,727.72 : 261,821.06 = 103,684.80 : x
  2. Step 2: Convert to fraction form
    189,727.72/261,821.06 = 103,684.80/x
  3. Step 3: Cross multiply
    189,727.72x = 261,821.06 × 103,684.80
  4. Step 4: Simplify right side
    189,727.72x = 27,146,864,241.89
  5. Step 5: Solve for x
    x = 27,146,864,241.89/189,727.72
  6. Step 6: Final answer
    x = 143,083.28

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1.5x scale

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.