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Finding the Third Proportional to 86,177,456 and 128,960,854

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Solution

The third proportional to 86,177,456 and 128,960,854 is: 192,984,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,177,456 : 128,960,854 = 128,960,854 : x
  2. Step 2: Convert to fraction form
    86,177,456/128,960,854 = 128,960,854/x
  3. Step 3: Cross multiply
    86,177,456x = 128,960,854 × 128,960,854
  4. Step 4: Simplify right side
    86,177,456x = 16,630,901,864,409,316
  5. Step 5: Solve for x
    x = 16,630,901,864,409,316/86,177,456
  6. Step 6: Final answer
    x = 192,984,367.80

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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.