Home / 190,771.05-285,938.86-76,845.89

Finding the Fourth Proportional to 190,771.05, 285,938.86 and 76,845.89

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Solution

The fourth proportional to 190,771.05, 285,938.86 and 76,845.89 is: 115,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,771.05 : 285,938.86 = 76,845.89 : x
  2. Step 2: Convert to fraction form
    190,771.05/285,938.86 = 76,845.89/x
  3. Step 3: Cross multiply
    190,771.05x = 285,938.86 × 76,845.89
  4. Step 4: Simplify right side
    190,771.05x = 21,973,226,182.29
  5. Step 5: Solve for x
    x = 21,973,226,182.29/190,771.05
  6. Step 6: Final answer
    x = 115,181.14

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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.