Home / 142,315,862,710.52-196,399,504,078.38-78,086,569,996.79

Finding the Fourth Proportional to 142,315,862,710.52, 196,399,504,078.38 and 78,086,569,996.79

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Solution

The fourth proportional to 142,315,862,710.52, 196,399,504,078.38 and 78,086,569,996.79 is: 107,761,449,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,315,862,710.52 : 196,399,504,078.38 = 78,086,569,996.79 : x
  2. Step 2: Convert to fraction form
    142,315,862,710.52/196,399,504,078.38 = 78,086,569,996.79/x
  3. Step 3: Cross multiply
    142,315,862,710.52x = 196,399,504,078.38 × 78,086,569,996.79
  4. Step 4: Simplify right side
    142,315,862,710.52x = 15,336,163,622,551,262,593,024
  5. Step 5: Solve for x
    x = 15,336,163,622,551,262,593,024/142,315,862,710.52
  6. Step 6: Final answer
    x = 107,761,449,289.36

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1.5x scale

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.