Home / 128,741,725.47-192,869,580.60-76,062,208.86

Finding the Fourth Proportional to 128,741,725.47, 192,869,580.60 and 76,062,208.86

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Solution

The fourth proportional to 128,741,725.47, 192,869,580.60 and 76,062,208.86 is: 113,949,741.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,741,725.47 : 192,869,580.60 = 76,062,208.86 : x
  2. Step 2: Convert to fraction form
    128,741,725.47/192,869,580.60 = 76,062,208.86/x
  3. Step 3: Cross multiply
    128,741,725.47x = 192,869,580.60 × 76,062,208.86
  4. Step 4: Simplify right side
    128,741,725.47x = 14,670,086,322,337,804
  5. Step 5: Solve for x
    x = 14,670,086,322,337,804/128,741,725.47
  6. Step 6: Final answer
    x = 113,949,741.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.