Home / 171,608.11-236,809.52-99,999.79

Finding the Fourth Proportional to 171,608.11, 236,809.52 and 99,999.79

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Solution

The fourth proportional to 171,608.11, 236,809.52 and 99,999.79 is: 137,994.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,608.11 : 236,809.52 = 99,999.79 : x
  2. Step 2: Convert to fraction form
    171,608.11/236,809.52 = 99,999.79/x
  3. Step 3: Cross multiply
    171,608.11x = 236,809.52 × 99,999.79
  4. Step 4: Simplify right side
    171,608.11x = 23,680,901,770.00
  5. Step 5: Solve for x
    x = 23,680,901,770.00/171,608.11
  6. Step 6: Final answer
    x = 137,994.07

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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.