Home / 82,782,212.40-124,173,318.60-81,081,601.20

Finding the Fourth Proportional to 82,782,212.40, 124,173,318.60 and 81,081,601.20

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Solution

The fourth proportional to 82,782,212.40, 124,173,318.60 and 81,081,601.20 is: 121,622,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,782,212.40 : 124,173,318.60 = 81,081,601.20 : x
  2. Step 2: Convert to fraction form
    82,782,212.40/124,173,318.60 = 81,081,601.20/x
  3. Step 3: Cross multiply
    82,782,212.40x = 124,173,318.60 × 81,081,601.20
  4. Step 4: Simplify right side
    82,782,212.40x = 10,068,171,498,405,742
  5. Step 5: Solve for x
    x = 10,068,171,498,405,742/82,782,212.40
  6. Step 6: Final answer
    x = 121,622,401.80

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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.