Home / 118,708.62-163,842.12-80,480.46

Finding the Fourth Proportional to 118,708.62, 163,842.12 and 80,480.46

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Solution

The fourth proportional to 118,708.62, 163,842.12 and 80,480.46 is: 111,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,708.62 : 163,842.12 = 80,480.46 : x
  2. Step 2: Convert to fraction form
    118,708.62/163,842.12 = 80,480.46/x
  3. Step 3: Cross multiply
    118,708.62x = 163,842.12 × 80,480.46
  4. Step 4: Simplify right side
    118,708.62x = 13,186,089,284.68
  5. Step 5: Solve for x
    x = 13,186,089,284.68/118,708.62
  6. Step 6: Final answer
    x = 111,079.46

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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.