Home / 78,179.45-117,268.19-19,015.16

Finding the Fourth Proportional to 78,179.45, 117,268.19 and 19,015.16

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Solution

The fourth proportional to 78,179.45, 117,268.19 and 19,015.16 is: 28,522.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,179.45 : 117,268.19 = 19,015.16 : x
  2. Step 2: Convert to fraction form
    78,179.45/117,268.19 = 19,015.16/x
  3. Step 3: Cross multiply
    78,179.45x = 117,268.19 × 19,015.16
  4. Step 4: Simplify right side
    78,179.45x = 2,229,872,785.65
  5. Step 5: Solve for x
    x = 2,229,872,785.65/78,179.45
  6. Step 6: Final answer
    x = 28,522.49

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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.