Home / 137,083.03-189,173.51-76,653.79

Finding the Fourth Proportional to 137,083.03, 189,173.51 and 76,653.79

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Solution

The fourth proportional to 137,083.03, 189,173.51 and 76,653.79 is: 105,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,083.03 : 189,173.51 = 76,653.79 : x
  2. Step 2: Convert to fraction form
    137,083.03/189,173.51 = 76,653.79/x
  3. Step 3: Cross multiply
    137,083.03x = 189,173.51 × 76,653.79
  4. Step 4: Simplify right side
    137,083.03x = 14,500,865,940.35
  5. Step 5: Solve for x
    x = 14,500,865,940.35/137,083.03
  6. Step 6: Final answer
    x = 105,781.63

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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.