Home / 142,315,862,711.77-196,399,504,080.11-78,086,569,998.05

Finding the Fourth Proportional to 142,315,862,711.77, 196,399,504,080.11 and 78,086,569,998.05

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Solution

The fourth proportional to 142,315,862,711.77, 196,399,504,080.11 and 78,086,569,998.05 is: 107,761,449,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,315,862,711.77 : 196,399,504,080.11 = 78,086,569,998.05 : x
  2. Step 2: Convert to fraction form
    142,315,862,711.77/196,399,504,080.11 = 78,086,569,998.05/x
  3. Step 3: Cross multiply
    142,315,862,711.77x = 196,399,504,080.11 × 78,086,569,998.05
  4. Step 4: Simplify right side
    142,315,862,711.77x = 15,336,163,622,932,833,107,968
  5. Step 5: Solve for x
    x = 15,336,163,622,932,833,107,968/142,315,862,711.77
  6. Step 6: Final answer
    x = 107,761,449,291.10

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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.