Home / 81,886,464,437.40-122,829,696,656.10-68,662,511,746.20

Finding the Fourth Proportional to 81,886,464,437.40, 122,829,696,656.10 and 68,662,511,746.20

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Solution

The fourth proportional to 81,886,464,437.40, 122,829,696,656.10 and 68,662,511,746.20 is: 102,993,767,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886,464,437.40 : 122,829,696,656.10 = 68,662,511,746.20 : x
  2. Step 2: Convert to fraction form
    81,886,464,437.40/122,829,696,656.10 = 68,662,511,746.20/x
  3. Step 3: Cross multiply
    81,886,464,437.40x = 122,829,696,656.10 × 68,662,511,746.20
  4. Step 4: Simplify right side
    81,886,464,437.40x = 8,433,795,489,431,649,517,568
  5. Step 5: Solve for x
    x = 8,433,795,489,431,649,517,568/81,886,464,437.40
  6. Step 6: Final answer
    x = 102,993,767,619.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.