Home / 129,662,619,876.46-178,940,007,653.25-71,790,999,228.82

Finding the Fourth Proportional to 129,662,619,876.46, 178,940,007,653.25 and 71,790,999,228.82

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Solution

The fourth proportional to 129,662,619,876.46, 178,940,007,653.25 and 71,790,999,228.82 is: 99,074,675,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,662,619,876.46 : 178,940,007,653.25 = 71,790,999,228.82 : x
  2. Step 2: Convert to fraction form
    129,662,619,876.46/178,940,007,653.25 = 71,790,999,228.82/x
  3. Step 3: Cross multiply
    129,662,619,876.46x = 178,940,007,653.25 × 71,790,999,228.82
  4. Step 4: Simplify right side
    129,662,619,876.46x = 12,846,281,951,439,516,336,128
  5. Step 5: Solve for x
    x = 12,846,281,951,439,516,336,128/129,662,619,876.46
  6. Step 6: Final answer
    x = 99,074,675,212.33

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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.