Home / 78,166,451.07-117,250,674.42-20,658,225.38

Finding the Fourth Proportional to 78,166,451.07, 117,250,674.42 and 20,658,225.38

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Solution

The fourth proportional to 78,166,451.07, 117,250,674.42 and 20,658,225.38 is: 30,987,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,451.07 : 117,250,674.42 = 20,658,225.38 : x
  2. Step 2: Convert to fraction form
    78,166,451.07/117,250,674.42 = 20,658,225.38/x
  3. Step 3: Cross multiply
    78,166,451.07x = 117,250,674.42 × 20,658,225.38
  4. Step 4: Simplify right side
    78,166,451.07x = 2,422,190,857,616,575.50
  5. Step 5: Solve for x
    x = 2,422,190,857,616,575.50/78,166,451.07
  6. Step 6: Final answer
    x = 30,987,601.77

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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.