Home / 82,701,231.20-124,051,846.80-78,733,138.40

Finding the Fourth Proportional to 82,701,231.20, 124,051,846.80 and 78,733,138.40

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Solution

The fourth proportional to 82,701,231.20, 124,051,846.80 and 78,733,138.40 is: 118,099,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,701,231.20 : 124,051,846.80 = 78,733,138.40 : x
  2. Step 2: Convert to fraction form
    82,701,231.20/124,051,846.80 = 78,733,138.40/x
  3. Step 3: Cross multiply
    82,701,231.20x = 124,051,846.80 × 78,733,138.40
  4. Step 4: Simplify right side
    82,701,231.20x = 9,766,991,222,879,998
  5. Step 5: Solve for x
    x = 9,766,991,222,879,998/82,701,231.20
  6. Step 6: Final answer
    x = 118,099,707.60

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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.