Home / 78,733,978.80-118,100,968.20-76,608,214.80

Finding the Fourth Proportional to 78,733,978.80, 118,100,968.20 and 76,608,214.80

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Solution

The fourth proportional to 78,733,978.80, 118,100,968.20 and 76,608,214.80 is: 114,912,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733,978.80 : 118,100,968.20 = 76,608,214.80 : x
  2. Step 2: Convert to fraction form
    78,733,978.80/118,100,968.20 = 76,608,214.80/x
  3. Step 3: Cross multiply
    78,733,978.80x = 118,100,968.20 × 76,608,214.80
  4. Step 4: Simplify right side
    78,733,978.80x = 9,047,504,339,953,570
  5. Step 5: Solve for x
    x = 9,047,504,339,953,570/78,733,978.80
  6. Step 6: Final answer
    x = 114,912,322.20

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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.