Home / 190,638.42-285,959.55-57,519.78

Finding the Fourth Proportional to 190,638.42, 285,959.55 and 57,519.78

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Solution

The fourth proportional to 190,638.42, 285,959.55 and 57,519.78 is: 86,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,638.42 : 285,959.55 = 57,519.78 : x
  2. Step 2: Convert to fraction form
    190,638.42/285,959.55 = 57,519.78/x
  3. Step 3: Cross multiply
    190,638.42x = 285,959.55 × 57,519.78
  4. Step 4: Simplify right side
    190,638.42x = 16,448,330,404.90
  5. Step 5: Solve for x
    x = 16,448,330,404.90/190,638.42
  6. Step 6: Final answer
    x = 86,280.25

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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.