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Finding the Fourth Proportional to 100,334,603.80, 150,501,905.70 and 80,179,211.80

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Solution

The fourth proportional to 100,334,603.80, 150,501,905.70 and 80,179,211.80 is: 120,268,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334,603.80 : 150,501,905.70 = 80,179,211.80 : x
  2. Step 2: Convert to fraction form
    100,334,603.80/150,501,905.70 = 80,179,211.80/x
  3. Step 3: Cross multiply
    100,334,603.80x = 150,501,905.70 × 80,179,211.80
  4. Step 4: Simplify right side
    100,334,603.80x = 12,067,124,173,423,926
  5. Step 5: Solve for x
    x = 12,067,124,173,423,926/100,334,603.80
  6. Step 6: Final answer
    x = 120,268,817.70

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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.