Home / 82,026,078.80-123,039,118.20-80,750,620.40

Finding the Fourth Proportional to 82,026,078.80, 123,039,118.20 and 80,750,620.40

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Solution

The fourth proportional to 82,026,078.80, 123,039,118.20 and 80,750,620.40 is: 121,125,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,026,078.80 : 123,039,118.20 = 80,750,620.40 : x
  2. Step 2: Convert to fraction form
    82,026,078.80/123,039,118.20 = 80,750,620.40/x
  3. Step 3: Cross multiply
    82,026,078.80x = 123,039,118.20 × 80,750,620.40
  4. Step 4: Simplify right side
    82,026,078.80x = 9,935,485,128,118,932
  5. Step 5: Solve for x
    x = 9,935,485,128,118,932/82,026,078.80
  6. Step 6: Final answer
    x = 121,125,930.60

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1.5x scale

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.