Home / 78,957,680.78-118,296,062.32-67,325,134.69

Finding the Fourth Proportional to 78,957,680.78, 118,296,062.32 and 67,325,134.69

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Solution

The fourth proportional to 78,957,680.78, 118,296,062.32 and 67,325,134.69 is: 100,867,936.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,957,680.78 : 118,296,062.32 = 67,325,134.69 : x
  2. Step 2: Convert to fraction form
    78,957,680.78/118,296,062.32 = 67,325,134.69/x
  3. Step 3: Cross multiply
    78,957,680.78x = 118,296,062.32 × 67,325,134.69
  4. Step 4: Simplify right side
    78,957,680.78x = 7,964,298,328,620,531
  5. Step 5: Solve for x
    x = 7,964,298,328,620,531/78,957,680.78
  6. Step 6: Final answer
    x = 100,867,936.47

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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.