Home / 213,636,992.80-320,451,987.30-68,068,576.72

Finding the Fourth Proportional to 213,636,992.80, 320,451,987.30 and 68,068,576.72

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Solution

The fourth proportional to 213,636,992.80, 320,451,987.30 and 68,068,576.72 is: 102,101,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,636,992.80 : 320,451,987.30 = 68,068,576.72 : x
  2. Step 2: Convert to fraction form
    213,636,992.80/320,451,987.30 = 68,068,576.72/x
  3. Step 3: Cross multiply
    213,636,992.80x = 320,451,987.30 × 68,068,576.72
  4. Step 4: Simplify right side
    213,636,992.80x = 21,812,710,682,606,516
  5. Step 5: Solve for x
    x = 21,812,710,682,606,516/213,636,992.80
  6. Step 6: Final answer
    x = 102,101,749.31

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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.