Home / 190,655.80-263,136.50-105,800.20

Finding the Fourth Proportional to 190,655.80, 263,136.50 and 105,800.20

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Solution

The fourth proportional to 190,655.80, 263,136.50 and 105,800.20 is: 146,021.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,655.80 : 263,136.50 = 105,800.20 : x
  2. Step 2: Convert to fraction form
    190,655.80/263,136.50 = 105,800.20/x
  3. Step 3: Cross multiply
    190,655.80x = 263,136.50 × 105,800.20
  4. Step 4: Simplify right side
    190,655.80x = 27,839,894,327.30
  5. Step 5: Solve for x
    x = 27,839,894,327.30/190,655.80
  6. Step 6: Final answer
    x = 146,021.75

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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.