Home / 189,781.20-284,673.69-77,431.41

Finding the Fourth Proportional to 189,781.20, 284,673.69 and 77,431.41

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Solution

The fourth proportional to 189,781.20, 284,673.69 and 77,431.41 is: 116,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,781.20 : 284,673.69 = 77,431.41 : x
  2. Step 2: Convert to fraction form
    189,781.20/284,673.69 = 77,431.41/x
  3. Step 3: Cross multiply
    189,781.20x = 284,673.69 × 77,431.41
  4. Step 4: Simplify right side
    189,781.20x = 22,042,685,206.60
  5. Step 5: Solve for x
    x = 22,042,685,206.60/189,781.20
  6. Step 6: Final answer
    x = 116,147.89

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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.