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Finding the Fourth Proportional to 140,405,968.80, 210,357,010.80 and 120,250,576.80

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Solution

The fourth proportional to 140,405,968.80, 210,357,010.80 and 120,250,576.80 is: 180,160,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,405,968.80 : 210,357,010.80 = 120,250,576.80 : x
  2. Step 2: Convert to fraction form
    140,405,968.80/210,357,010.80 = 120,250,576.80/x
  3. Step 3: Cross multiply
    140,405,968.80x = 210,357,010.80 × 120,250,576.80
  4. Step 4: Simplify right side
    140,405,968.80x = 25,295,551,882,623,832
  5. Step 5: Solve for x
    x = 25,295,551,882,623,832/140,405,968.80
  6. Step 6: Final answer
    x = 180,160,089.34

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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.