Home / 144,512,163.57-199,426,982.91-78,432,662.55

Finding the Fourth Proportional to 144,512,163.57, 199,426,982.91 and 78,432,662.55

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Solution

The fourth proportional to 144,512,163.57, 199,426,982.91 and 78,432,662.55 is: 108,237,181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,512,163.57 : 199,426,982.91 = 78,432,662.55 : x
  2. Step 2: Convert to fraction form
    144,512,163.57/199,426,982.91 = 78,432,662.55/x
  3. Step 3: Cross multiply
    144,512,163.57x = 199,426,982.91 × 78,432,662.55
  4. Step 4: Simplify right side
    144,512,163.57x = 15,641,589,253,944,646
  5. Step 5: Solve for x
    x = 15,641,589,253,944,646/144,512,163.57
  6. Step 6: Final answer
    x = 108,237,181.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.