Home / 78,180.48-117,270.72-19,016.19

Finding the Fourth Proportional to 78,180.48, 117,270.72 and 19,016.19

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Solution

The fourth proportional to 78,180.48, 117,270.72 and 19,016.19 is: 28,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,180.48 : 117,270.72 = 19,016.19 : x
  2. Step 2: Convert to fraction form
    78,180.48/117,270.72 = 19,016.19/x
  3. Step 3: Cross multiply
    78,180.48x = 117,270.72 × 19,016.19
  4. Step 4: Simplify right side
    78,180.48x = 2,230,042,292.96
  5. Step 5: Solve for x
    x = 2,230,042,292.96/78,180.48
  6. Step 6: Final answer
    x = 28,524.29

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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.