Home / 78,166,450.57-117,250,673.68-20,658,224.88

Finding the Fourth Proportional to 78,166,450.57, 117,250,673.68 and 20,658,224.88

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Solution

The fourth proportional to 78,166,450.57, 117,250,673.68 and 20,658,224.88 is: 30,987,601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,450.57 : 117,250,673.68 = 20,658,224.88 : x
  2. Step 2: Convert to fraction form
    78,166,450.57/117,250,673.68 = 20,658,224.88/x
  3. Step 3: Cross multiply
    78,166,450.57x = 117,250,673.68 × 20,658,224.88
  4. Step 4: Simplify right side
    78,166,450.57x = 2,422,190,783,523,392.50
  5. Step 5: Solve for x
    x = 2,422,190,783,523,392.50/78,166,450.57
  6. Step 6: Final answer
    x = 30,987,601.02

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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.