Home / 189,976.56-285,076.73-70,117.89

Finding the Fourth Proportional to 189,976.56, 285,076.73 and 70,117.89

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Solution

The fourth proportional to 189,976.56, 285,076.73 and 70,117.89 is: 105,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,976.56 : 285,076.73 = 70,117.89 : x
  2. Step 2: Convert to fraction form
    189,976.56/285,076.73 = 70,117.89/x
  3. Step 3: Cross multiply
    189,976.56x = 285,076.73 × 70,117.89
  4. Step 4: Simplify right side
    189,976.56x = 19,988,978,795.70
  5. Step 5: Solve for x
    x = 19,988,978,795.70/189,976.56
  6. Step 6: Final answer
    x = 105,218.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.