Home / 143,327,202.80-214,990,804.20-78,605,999.60

Finding the Fourth Proportional to 143,327,202.80, 214,990,804.20 and 78,605,999.60

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Solution

The fourth proportional to 143,327,202.80, 214,990,804.20 and 78,605,999.60 is: 117,908,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,327,202.80 : 214,990,804.20 = 78,605,999.60 : x
  2. Step 2: Convert to fraction form
    143,327,202.80/214,990,804.20 = 78,605,999.60/x
  3. Step 3: Cross multiply
    143,327,202.80x = 214,990,804.20 × 78,605,999.60
  4. Step 4: Simplify right side
    143,327,202.80x = 16,899,567,068,948,876
  5. Step 5: Solve for x
    x = 16,899,567,068,948,876/143,327,202.80
  6. Step 6: Final answer
    x = 117,908,999.40

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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.