Home / 190,781.40-263,290.28-105,899.88

Finding the Fourth Proportional to 190,781.40, 263,290.28 and 105,899.88

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Solution

The fourth proportional to 190,781.40, 263,290.28 and 105,899.88 is: 146,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,781.40 : 263,290.28 = 105,899.88 : x
  2. Step 2: Convert to fraction form
    190,781.40/263,290.28 = 105,899.88/x
  3. Step 3: Cross multiply
    190,781.40x = 263,290.28 × 105,899.88
  4. Step 4: Simplify right side
    190,781.40x = 27,882,409,057.17
  5. Step 5: Solve for x
    x = 27,882,409,057.17/190,781.40
  6. Step 6: Final answer
    x = 146,148.47

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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.