Home / 193,421.40-290,139.39-53,190.96

Finding the Fourth Proportional to 193,421.40, 290,139.39 and 53,190.96

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Solution

The fourth proportional to 193,421.40, 290,139.39 and 53,190.96 is: 79,788.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,421.40 : 290,139.39 = 53,190.96 : x
  2. Step 2: Convert to fraction form
    193,421.40/290,139.39 = 53,190.96/x
  3. Step 3: Cross multiply
    193,421.40x = 290,139.39 × 53,190.96
  4. Step 4: Simplify right side
    193,421.40x = 15,432,792,687.91
  5. Step 5: Solve for x
    x = 15,432,792,687.91/193,421.40
  6. Step 6: Final answer
    x = 79,788.44

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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.