Home / 101,670,929.69-140,373,450.36-78,107,500.08

Finding the Fourth Proportional to 101,670,929.69, 140,373,450.36 and 78,107,500.08

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Solution

The fourth proportional to 101,670,929.69, 140,373,450.36 and 78,107,500.08 is: 107,840,257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,670,929.69 : 140,373,450.36 = 78,107,500.08 : x
  2. Step 2: Convert to fraction form
    101,670,929.69/140,373,450.36 = 78,107,500.08/x
  3. Step 3: Cross multiply
    101,670,929.69x = 140,373,450.36 × 78,107,500.08
  4. Step 4: Simplify right side
    101,670,929.69x = 10,964,219,285,223,576
  5. Step 5: Solve for x
    x = 10,964,219,285,223,576/101,670,929.69
  6. Step 6: Final answer
    x = 107,840,257.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.