Home / 128,355,511.60-192,512,608.20-37,457,796.40

Finding the Fourth Proportional to 128,355,511.60, 192,512,608.20 and 37,457,796.40

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Solution

The fourth proportional to 128,355,511.60, 192,512,608.20 and 37,457,796.40 is: 56,180,665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,355,511.60 : 192,512,608.20 = 37,457,796.40 : x
  2. Step 2: Convert to fraction form
    128,355,511.60/192,512,608.20 = 37,457,796.40/x
  3. Step 3: Cross multiply
    128,355,511.60x = 192,512,608.20 × 37,457,796.40
  4. Step 4: Simplify right side
    128,355,511.60x = 7,211,098,082,388,570
  5. Step 5: Solve for x
    x = 7,211,098,082,388,570/128,355,511.60
  6. Step 6: Final answer
    x = 56,180,665.66

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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.