Home / 112,305,787.20-168,458,680.80-76,026,081.60

Finding the Fourth Proportional to 112,305,787.20, 168,458,680.80 and 76,026,081.60

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Solution

The fourth proportional to 112,305,787.20, 168,458,680.80 and 76,026,081.60 is: 114,039,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,305,787.20 : 168,458,680.80 = 76,026,081.60 : x
  2. Step 2: Convert to fraction form
    112,305,787.20/168,458,680.80 = 76,026,081.60/x
  3. Step 3: Cross multiply
    112,305,787.20x = 168,458,680.80 × 76,026,081.60
  4. Step 4: Simplify right side
    112,305,787.20x = 12,807,253,412,729,154
  5. Step 5: Solve for x
    x = 12,807,253,412,729,154/112,305,787.20
  6. Step 6: Final answer
    x = 114,039,122.40

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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.