Home / 121,185.60-181,778.40-79,195.20

Finding the Fourth Proportional to 121,185.60, 181,778.40 and 79,195.20

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Solution

The fourth proportional to 121,185.60, 181,778.40 and 79,195.20 is: 118,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,185.60 : 181,778.40 = 79,195.20 : x
  2. Step 2: Convert to fraction form
    121,185.60/181,778.40 = 79,195.20/x
  3. Step 3: Cross multiply
    121,185.60x = 181,778.40 × 79,195.20
  4. Step 4: Simplify right side
    121,185.60x = 14,395,976,743.68
  5. Step 5: Solve for x
    x = 14,395,976,743.68/121,185.60
  6. Step 6: Final answer
    x = 118,792.80

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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.