Home / 190,668.64-263,111.28-105,780.64

Finding the Fourth Proportional to 190,668.64, 263,111.28 and 105,780.64

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Solution

The fourth proportional to 190,668.64, 263,111.28 and 105,780.64 is: 145,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,668.64 : 263,111.28 = 105,780.64 : x
  2. Step 2: Convert to fraction form
    190,668.64/263,111.28 = 105,780.64/x
  3. Step 3: Cross multiply
    190,668.64x = 263,111.28 × 105,780.64
  4. Step 4: Simplify right side
    190,668.64x = 27,832,079,589.62
  5. Step 5: Solve for x
    x = 27,832,079,589.62/190,668.64
  6. Step 6: Final answer
    x = 145,970.93

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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.