Home / 190,613.40-263,044.60-105,728.28

Finding the Fourth Proportional to 190,613.40, 263,044.60 and 105,728.28

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Solution

The fourth proportional to 190,613.40, 263,044.60 and 105,728.28 is: 145,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,613.40 : 263,044.60 = 105,728.28 : x
  2. Step 2: Convert to fraction form
    190,613.40/263,044.60 = 105,728.28/x
  3. Step 3: Cross multiply
    190,613.40x = 263,044.60 × 105,728.28
  4. Step 4: Simplify right side
    190,613.40x = 27,811,253,121.29
  5. Step 5: Solve for x
    x = 27,811,253,121.29/190,613.40
  6. Step 6: Final answer
    x = 145,903.98

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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.