Home / 193,539.97-290,405.07-86,999.20

Finding the Fourth Proportional to 193,539.97, 290,405.07 and 86,999.20

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Solution

The fourth proportional to 193,539.97, 290,405.07 and 86,999.20 is: 130,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,539.97 : 290,405.07 = 86,999.20 : x
  2. Step 2: Convert to fraction form
    193,539.97/290,405.07 = 86,999.20/x
  3. Step 3: Cross multiply
    193,539.97x = 290,405.07 × 86,999.20
  4. Step 4: Simplify right side
    193,539.97x = 25,265,008,039.93
  5. Step 5: Solve for x
    x = 25,265,008,039.93/193,539.97
  6. Step 6: Final answer
    x = 130,541.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.