Home / 142,992,640.51-197,324,033.45-81,111,650.47

Finding the Fourth Proportional to 142,992,640.51, 197,324,033.45 and 81,111,650.47

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Solution

The fourth proportional to 142,992,640.51, 197,324,033.45 and 81,111,650.47 is: 111,930,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,640.51 : 197,324,033.45 = 81,111,650.47 : x
  2. Step 2: Convert to fraction form
    142,992,640.51/197,324,033.45 = 81,111,650.47/x
  3. Step 3: Cross multiply
    142,992,640.51x = 197,324,033.45 × 81,111,650.47
  4. Step 4: Simplify right side
    142,992,640.51x = 16,005,278,029,628,120
  5. Step 5: Solve for x
    x = 16,005,278,029,628,120/142,992,640.51
  6. Step 6: Final answer
    x = 111,930,781.70

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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.