Home / 139,968,108.80-209,952,163.20-105,479,993.60

Finding the Fourth Proportional to 139,968,108.80, 209,952,163.20 and 105,479,993.60

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Solution

The fourth proportional to 139,968,108.80, 209,952,163.20 and 105,479,993.60 is: 158,219,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,108.80 : 209,952,163.20 = 105,479,993.60 : x
  2. Step 2: Convert to fraction form
    139,968,108.80/209,952,163.20 = 105,479,993.60/x
  3. Step 3: Cross multiply
    139,968,108.80x = 209,952,163.20 × 105,479,993.60
  4. Step 4: Simplify right side
    139,968,108.80x = 22,145,752,830,642,152
  5. Step 5: Solve for x
    x = 22,145,752,830,642,152/139,968,108.80
  6. Step 6: Final answer
    x = 158,219,990.40

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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.