Home / 131,669,059.25-197,361,033.12-85,643,819.21

Finding the Fourth Proportional to 131,669,059.25, 197,361,033.12 and 85,643,819.21

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Solution

The fourth proportional to 131,669,059.25, 197,361,033.12 and 85,643,819.21 is: 128,373,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,669,059.25 : 197,361,033.12 = 85,643,819.21 : x
  2. Step 2: Convert to fraction form
    131,669,059.25/197,361,033.12 = 85,643,819.21/x
  3. Step 3: Cross multiply
    131,669,059.25x = 197,361,033.12 × 85,643,819.21
  4. Step 4: Simplify right side
    131,669,059.25x = 16,902,752,638,641,298
  5. Step 5: Solve for x
    x = 16,902,752,638,641,298/131,669,059.25
  6. Step 6: Final answer
    x = 128,373,003.77

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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.