Home / 186,339.75-257,147.78-105,782.55

Finding the Fourth Proportional to 186,339.75, 257,147.78 and 105,782.55

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Solution

The fourth proportional to 186,339.75, 257,147.78 and 105,782.55 is: 145,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,339.75 : 257,147.78 = 105,782.55 : x
  2. Step 2: Convert to fraction form
    186,339.75/257,147.78 = 105,782.55/x
  3. Step 3: Cross multiply
    186,339.75x = 257,147.78 × 105,782.55
  4. Step 4: Simplify right side
    186,339.75x = 27,201,747,366.33
  5. Step 5: Solve for x
    x = 27,201,747,366.33/186,339.75
  6. Step 6: Final answer
    x = 145,979.31

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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.