Home / 82,782,215.40-124,173,323.10-81,081,604.20

Finding the Fourth Proportional to 82,782,215.40, 124,173,323.10 and 81,081,604.20

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Solution

The fourth proportional to 82,782,215.40, 124,173,323.10 and 81,081,604.20 is: 121,622,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,782,215.40 : 124,173,323.10 = 81,081,604.20 : x
  2. Step 2: Convert to fraction form
    82,782,215.40/124,173,323.10 = 81,081,604.20/x
  3. Step 3: Cross multiply
    82,782,215.40x = 124,173,323.10 × 81,081,604.20
  4. Step 4: Simplify right side
    82,782,215.40x = 10,068,172,235,792,916
  5. Step 5: Solve for x
    x = 10,068,172,235,792,916/82,782,215.40
  6. Step 6: Final answer
    x = 121,622,406.30

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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.