Home / 78,180.45-117,269.69-19,016.16

Finding the Fourth Proportional to 78,180.45, 117,269.69 and 19,016.16

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Solution

The fourth proportional to 78,180.45, 117,269.69 and 19,016.16 is: 28,524.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,180.45 : 117,269.69 = 19,016.16 : x
  2. Step 2: Convert to fraction form
    78,180.45/117,269.69 = 19,016.16/x
  3. Step 3: Cross multiply
    78,180.45x = 117,269.69 × 19,016.16
  4. Step 4: Simplify right side
    78,180.45x = 2,230,019,188.19
  5. Step 5: Solve for x
    x = 2,230,019,188.19/78,180.45
  6. Step 6: Final answer
    x = 28,524.00

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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.