Home / 139,814,520.68-209,576,277.48-78,313,514.60

Finding the Fourth Proportional to 139,814,520.68, 209,576,277.48 and 78,313,514.60

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Solution

The fourth proportional to 139,814,520.68, 209,576,277.48 and 78,313,514.60 is: 117,388,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,814,520.68 : 209,576,277.48 = 78,313,514.60 : x
  2. Step 2: Convert to fraction form
    139,814,520.68/209,576,277.48 = 78,313,514.60/x
  3. Step 3: Cross multiply
    139,814,520.68x = 209,576,277.48 × 78,313,514.60
  4. Step 4: Simplify right side
    139,814,520.68x = 16,412,654,866,243,630
  5. Step 5: Solve for x
    x = 16,412,654,866,243,630/139,814,520.68
  6. Step 6: Final answer
    x = 117,388,771.83

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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.