Home / 190,515.46-285,714.78-131,728.90

Finding the Fourth Proportional to 190,515.46, 285,714.78 and 131,728.90

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Solution

The fourth proportional to 190,515.46, 285,714.78 and 131,728.90 is: 197,552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,515.46 : 285,714.78 = 131,728.90 : x
  2. Step 2: Convert to fraction form
    190,515.46/285,714.78 = 131,728.90/x
  3. Step 3: Cross multiply
    190,515.46x = 285,714.78 × 131,728.90
  4. Step 4: Simplify right side
    190,515.46x = 37,636,893,683.14
  5. Step 5: Solve for x
    x = 37,636,893,683.14/190,515.46
  6. Step 6: Final answer
    x = 197,552.96

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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.