Home / 100,598,947,900.40-138,826,979,702.86-54,874,219,763.45

Finding the Fourth Proportional to 100,598,947,900.40, 138,826,979,702.86 and 54,874,219,763.45

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Solution

The fourth proportional to 100,598,947,900.40, 138,826,979,702.86 and 54,874,219,763.45 is: 75,726,658,700.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,598,947,900.40 : 138,826,979,702.86 = 54,874,219,763.45 : x
  2. Step 2: Convert to fraction form
    100,598,947,900.40/138,826,979,702.86 = 54,874,219,763.45/x
  3. Step 3: Cross multiply
    100,598,947,900.40x = 138,826,979,702.86 × 54,874,219,763.45
  4. Step 4: Simplify right side
    100,598,947,900.40x = 7,618,022,193,310,751,260,672
  5. Step 5: Solve for x
    x = 7,618,022,193,310,751,260,672/100,598,947,900.40
  6. Step 6: Final answer
    x = 75,726,658,700.78

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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.