Home / 190,668.90-263,123.11-105,785.76

Finding the Fourth Proportional to 190,668.90, 263,123.11 and 105,785.76

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Solution

The fourth proportional to 190,668.90, 263,123.11 and 105,785.76 is: 145,984.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,668.90 : 263,123.11 = 105,785.76 : x
  2. Step 2: Convert to fraction form
    190,668.90/263,123.11 = 105,785.76/x
  3. Step 3: Cross multiply
    190,668.90x = 263,123.11 × 105,785.76
  4. Step 4: Simplify right side
    190,668.90x = 27,834,678,164.91
  5. Step 5: Solve for x
    x = 27,834,678,164.91/190,668.90
  6. Step 6: Final answer
    x = 145,984.36

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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.