Home / 139,704,971.92-192,803,050.92-80,982,797.20

Finding the Fourth Proportional to 139,704,971.92, 192,803,050.92 and 80,982,797.20

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Solution

The fourth proportional to 139,704,971.92, 192,803,050.92 and 80,982,797.20 is: 111,762,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,704,971.92 : 192,803,050.92 = 80,982,797.20 : x
  2. Step 2: Convert to fraction form
    139,704,971.92/192,803,050.92 = 80,982,797.20/x
  3. Step 3: Cross multiply
    139,704,971.92x = 192,803,050.92 × 80,982,797.20
  4. Step 4: Simplify right side
    139,704,971.92x = 15,613,730,372,195,632
  5. Step 5: Solve for x
    x = 15,613,730,372,195,632/139,704,971.92
  6. Step 6: Final answer
    x = 111,762,166.78

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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.