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Finding the Third Proportional to 128,509,332 and 195,777,126

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Solution

The third proportional to 128,509,332 and 195,777,126 is: 298,256,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,509,332 : 195,777,126 = 195,777,126 : x
  2. Step 2: Convert to fraction form
    128,509,332/195,777,126 = 195,777,126/x
  3. Step 3: Cross multiply
    128,509,332x = 195,777,126 × 195,777,126
  4. Step 4: Simplify right side
    128,509,332x = 38,328,683,064,819,872
  5. Step 5: Solve for x
    x = 38,328,683,064,819,872/128,509,332
  6. Step 6: Final answer
    x = 298,256,029.10

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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.