Home / 120,990,037.20-181,485,055.80-105,873,493.20

Finding the Fourth Proportional to 120,990,037.20, 181,485,055.80 and 105,873,493.20

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Solution

The fourth proportional to 120,990,037.20, 181,485,055.80 and 105,873,493.20 is: 158,810,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,990,037.20 : 181,485,055.80 = 105,873,493.20 : x
  2. Step 2: Convert to fraction form
    120,990,037.20/181,485,055.80 = 105,873,493.20/x
  3. Step 3: Cross multiply
    120,990,037.20x = 181,485,055.80 × 105,873,493.20
  4. Step 4: Simplify right side
    120,990,037.20x = 19,214,456,821,142,924
  5. Step 5: Solve for x
    x = 19,214,456,821,142,924/120,990,037.20
  6. Step 6: Final answer
    x = 158,810,239.80

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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.