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Finding the Third Proportional to 100,145,053.69 and 213,517,903.50

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Solution

The third proportional to 100,145,053.69 and 213,517,903.50 is: 455,238,610.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,145,053.69 : 213,517,903.50 = 213,517,903.50 : x
  2. Step 2: Convert to fraction form
    100,145,053.69/213,517,903.50 = 213,517,903.50/x
  3. Step 3: Cross multiply
    100,145,053.69x = 213,517,903.50 × 213,517,903.50
  4. Step 4: Simplify right side
    100,145,053.69x = 45,589,895,115,035,312
  5. Step 5: Solve for x
    x = 45,589,895,115,035,312/100,145,053.69
  6. Step 6: Final answer
    x = 455,238,610.76

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.