Home / 78,166,451.45-117,250,674.99-20,658,225.75

Finding the Fourth Proportional to 78,166,451.45, 117,250,674.99 and 20,658,225.75

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Solution

The fourth proportional to 78,166,451.45, 117,250,674.99 and 20,658,225.75 is: 30,987,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,451.45 : 117,250,674.99 = 20,658,225.75 : x
  2. Step 2: Convert to fraction form
    78,166,451.45/117,250,674.99 = 20,658,225.75/x
  3. Step 3: Cross multiply
    78,166,451.45x = 117,250,674.99 × 20,658,225.75
  4. Step 4: Simplify right side
    78,166,451.45x = 2,422,190,913,283,299
  5. Step 5: Solve for x
    x = 2,422,190,913,283,299/78,166,451.45
  6. Step 6: Final answer
    x = 30,987,602.33

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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.