Home / 131,453,998.80-197,180,998.20-85,768,443.60

Finding the Fourth Proportional to 131,453,998.80, 197,180,998.20 and 85,768,443.60

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Solution

The fourth proportional to 131,453,998.80, 197,180,998.20 and 85,768,443.60 is: 128,652,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,453,998.80 : 197,180,998.20 = 85,768,443.60 : x
  2. Step 2: Convert to fraction form
    131,453,998.80/197,180,998.20 = 85,768,443.60/x
  3. Step 3: Cross multiply
    131,453,998.80x = 197,180,998.20 × 85,768,443.60
  4. Step 4: Simplify right side
    131,453,998.80x = 16,911,907,323,108,400
  5. Step 5: Solve for x
    x = 16,911,907,323,108,400/131,453,998.80
  6. Step 6: Final answer
    x = 128,652,665.40

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1.5x scale

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.