Home / 80,415,127.80-120,622,691.70-67,022,814.60

Finding the Fourth Proportional to 80,415,127.80, 120,622,691.70 and 67,022,814.60

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Solution

The fourth proportional to 80,415,127.80, 120,622,691.70 and 67,022,814.60 is: 100,534,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,415,127.80 : 120,622,691.70 = 67,022,814.60 : x
  2. Step 2: Convert to fraction form
    80,415,127.80/120,622,691.70 = 67,022,814.60/x
  3. Step 3: Cross multiply
    80,415,127.80x = 120,622,691.70 × 67,022,814.60
  4. Step 4: Simplify right side
    80,415,127.80x = 8,084,472,302,362,059
  5. Step 5: Solve for x
    x = 8,084,472,302,362,059/80,415,127.80
  6. Step 6: Final answer
    x = 100,534,221.90

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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.