Home / 139,678,663.32-192,756,615.84-80,975,361.60

Finding the Fourth Proportional to 139,678,663.32, 192,756,615.84 and 80,975,361.60

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Solution

The fourth proportional to 139,678,663.32, 192,756,615.84 and 80,975,361.60 is: 111,746,034.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,678,663.32 : 192,756,615.84 = 80,975,361.60 : x
  2. Step 2: Convert to fraction form
    139,678,663.32/192,756,615.84 = 80,975,361.60/x
  3. Step 3: Cross multiply
    139,678,663.32x = 192,756,615.84 × 80,975,361.60
  4. Step 4: Simplify right side
    139,678,663.32x = 15,608,536,668,436,286
  5. Step 5: Solve for x
    x = 15,608,536,668,436,286/139,678,663.32
  6. Step 6: Final answer
    x = 111,746,034.06

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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.