Home / 139,313,378,391.21-192,249,448,871.42-80,654,674,050.86

Finding the Fourth Proportional to 139,313,378,391.21, 192,249,448,871.42 and 80,654,674,050.86

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Solution

The fourth proportional to 139,313,378,391.21, 192,249,448,871.42 and 80,654,674,050.86 is: 111,301,705,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,313,378,391.21 : 192,249,448,871.42 = 80,654,674,050.86 : x
  2. Step 2: Convert to fraction form
    139,313,378,391.21/192,249,448,871.42 = 80,654,674,050.86/x
  3. Step 3: Cross multiply
    139,313,378,391.21x = 192,249,448,871.42 × 80,654,674,050.86
  4. Step 4: Simplify right side
    139,313,378,391.21x = 15,505,816,635,181,855,932,416
  5. Step 5: Solve for x
    x = 15,505,816,635,181,855,932,416/139,313,378,391.21
  6. Step 6: Final answer
    x = 111,301,705,652.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.