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Finding the Third Proportional to 78,166,434 and 104,210,049

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Solution

The third proportional to 78,166,434 and 104,210,049 is: 138,930,916.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,434 : 104,210,049 = 104,210,049 : x
  2. Step 2: Convert to fraction form
    78,166,434/104,210,049 = 104,210,049/x
  3. Step 3: Cross multiply
    78,166,434x = 104,210,049 × 104,210,049
  4. Step 4: Simplify right side
    78,166,434x = 10,859,734,312,582,400
  5. Step 5: Solve for x
    x = 10,859,734,312,582,400/78,166,434
  6. Step 6: Final answer
    x = 138,930,916.47

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.