Home / 78,245.16-117,367.74-19,081.34

Finding the Fourth Proportional to 78,245.16, 117,367.74 and 19,081.34

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Solution

The fourth proportional to 78,245.16, 117,367.74 and 19,081.34 is: 28,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245.16 : 117,367.74 = 19,081.34 : x
  2. Step 2: Convert to fraction form
    78,245.16/117,367.74 = 19,081.34/x
  3. Step 3: Cross multiply
    78,245.16x = 117,367.74 × 19,081.34
  4. Step 4: Simplify right side
    78,245.16x = 2,239,533,751.97
  5. Step 5: Solve for x
    x = 2,239,533,751.97/78,245.16
  6. Step 6: Final answer
    x = 28,622.01

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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.