Home / 139,428,448.86-192,397,779.99-80,679,395.10

Finding the Fourth Proportional to 139,428,448.86, 192,397,779.99 and 80,679,395.10

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Solution

The fourth proportional to 139,428,448.86, 192,397,779.99 and 80,679,395.10 is: 111,329,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,428,448.86 : 192,397,779.99 = 80,679,395.10 : x
  2. Step 2: Convert to fraction form
    139,428,448.86/192,397,779.99 = 80,679,395.10/x
  3. Step 3: Cross multiply
    139,428,448.86x = 192,397,779.99 × 80,679,395.10
  4. Step 4: Simplify right side
    139,428,448.86x = 15,522,536,508,176,084
  5. Step 5: Solve for x
    x = 15,522,536,508,176,084/139,428,448.86
  6. Step 6: Final answer
    x = 111,329,765.45

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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.