Home / 190,399.20-285,562.08-140,010.72

Finding the Fourth Proportional to 190,399.20, 285,562.08 and 140,010.72

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Solution

The fourth proportional to 190,399.20, 285,562.08 and 140,010.72 is: 209,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,399.20 : 285,562.08 = 140,010.72 : x
  2. Step 2: Convert to fraction form
    190,399.20/285,562.08 = 140,010.72/x
  3. Step 3: Cross multiply
    190,399.20x = 285,562.08 × 140,010.72
  4. Step 4: Simplify right side
    190,399.20x = 39,981,752,425.50
  5. Step 5: Solve for x
    x = 39,981,752,425.50/190,399.20
  6. Step 6: Final answer
    x = 209,989.08

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1.5x scale

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.