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Finding the Third Proportional to 90,916,358.50 and 138,644,438.63

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Solution

The third proportional to 90,916,358.50 and 138,644,438.63 is: 211,428,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,916,358.50 : 138,644,438.63 = 138,644,438.63 : x
  2. Step 2: Convert to fraction form
    90,916,358.50/138,644,438.63 = 138,644,438.63/x
  3. Step 3: Cross multiply
    90,916,358.50x = 138,644,438.63 × 138,644,438.63
  4. Step 4: Simplify right side
    90,916,358.50x = 19,222,280,361,641,392
  5. Step 5: Solve for x
    x = 19,222,280,361,641,392/90,916,358.50
  6. Step 6: Final answer
    x = 211,428,181.67

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.