Home / 129,662,619,917.76-178,940,007,709.92-71,790,999,270

Finding the Fourth Proportional to 129,662,619,917.76, 178,940,007,709.92 and 71,790,999,270

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Solution

The fourth proportional to 129,662,619,917.76, 178,940,007,709.92 and 71,790,999,270 is: 99,074,675,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,662,619,917.76 : 178,940,007,709.92 = 71,790,999,270 : x
  2. Step 2: Convert to fraction form
    129,662,619,917.76/178,940,007,709.92 = 71,790,999,270/x
  3. Step 3: Cross multiply
    129,662,619,917.76x = 178,940,007,709.92 × 71,790,999,270
  4. Step 4: Simplify right side
    129,662,619,917.76x = 12,846,281,962,876,661,923,840
  5. Step 5: Solve for x
    x = 12,846,281,962,876,661,923,840/129,662,619,917.76
  6. Step 6: Final answer
    x = 99,074,675,268.98

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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.