Home / 190,711.48-263,181-105,828.36

Finding the Fourth Proportional to 190,711.48, 263,181 and 105,828.36

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Solution

The fourth proportional to 190,711.48, 263,181 and 105,828.36 is: 146,042.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,711.48 : 263,181 = 105,828.36 : x
  2. Step 2: Convert to fraction form
    190,711.48/263,181 = 105,828.36/x
  3. Step 3: Cross multiply
    190,711.48x = 263,181 × 105,828.36
  4. Step 4: Simplify right side
    190,711.48x = 27,852,013,613.16
  5. Step 5: Solve for x
    x = 27,852,013,613.16/190,711.48
  6. Step 6: Final answer
    x = 146,042.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.