Home / 149,639.81-206,538.39-86,014.58

Finding the Fourth Proportional to 149,639.81, 206,538.39 and 86,014.58

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Solution

The fourth proportional to 149,639.81, 206,538.39 and 86,014.58 is: 118,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,639.81 : 206,538.39 = 86,014.58 : x
  2. Step 2: Convert to fraction form
    149,639.81/206,538.39 = 86,014.58/x
  3. Step 3: Cross multiply
    149,639.81x = 206,538.39 × 86,014.58
  4. Step 4: Simplify right side
    149,639.81x = 17,765,311,837.03
  5. Step 5: Solve for x
    x = 17,765,311,837.03/149,639.81
  6. Step 6: Final answer
    x = 118,720.50

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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.