Home / 129,116,976.56-178,080,628.84-82,711,545.20

Finding the Fourth Proportional to 129,116,976.56, 178,080,628.84 and 82,711,545.20

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Solution

The fourth proportional to 129,116,976.56, 178,080,628.84 and 82,711,545.20 is: 114,077,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,116,976.56 : 178,080,628.84 = 82,711,545.20 : x
  2. Step 2: Convert to fraction form
    129,116,976.56/178,080,628.84 = 82,711,545.20/x
  3. Step 3: Cross multiply
    129,116,976.56x = 178,080,628.84 × 82,711,545.20
  4. Step 4: Simplify right side
    129,116,976.56x = 14,729,323,981,544,084
  5. Step 5: Solve for x
    x = 14,729,323,981,544,084/129,116,976.56
  6. Step 6: Final answer
    x = 114,077,361.27

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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.