Home / 145,739.76-201,121.56-82,078.68

Finding the Fourth Proportional to 145,739.76, 201,121.56 and 82,078.68

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Solution

The fourth proportional to 145,739.76, 201,121.56 and 82,078.68 is: 113,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,739.76 : 201,121.56 = 82,078.68 : x
  2. Step 2: Convert to fraction form
    145,739.76/201,121.56 = 82,078.68/x
  3. Step 3: Cross multiply
    145,739.76x = 201,121.56 × 82,078.68
  4. Step 4: Simplify right side
    145,739.76x = 16,507,792,164.34
  5. Step 5: Solve for x
    x = 16,507,792,164.34/145,739.76
  6. Step 6: Final answer
    x = 113,268.97

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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.