Home / 139,357,164.26-192,265,815.24-78,999,682.88

Finding the Fourth Proportional to 139,357,164.26, 192,265,815.24 and 78,999,682.88

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Solution

The fourth proportional to 139,357,164.26, 192,265,815.24 and 78,999,682.88 is: 108,992,878.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,357,164.26 : 192,265,815.24 = 78,999,682.88 : x
  2. Step 2: Convert to fraction form
    139,357,164.26/192,265,815.24 = 78,999,682.88/x
  3. Step 3: Cross multiply
    139,357,164.26x = 192,265,815.24 × 78,999,682.88
  4. Step 4: Simplify right side
    139,357,164.26x = 15,188,938,431,663,342
  5. Step 5: Solve for x
    x = 15,188,938,431,663,342/139,357,164.26
  6. Step 6: Final answer
    x = 108,992,878.21

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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.