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Finding the Third Proportional to 79,987,509 and 119,457,111

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Solution

The third proportional to 79,987,509 and 119,457,111 is: 178,402,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,987,509 : 119,457,111 = 119,457,111 : x
  2. Step 2: Convert to fraction form
    79,987,509/119,457,111 = 119,457,111/x
  3. Step 3: Cross multiply
    79,987,509x = 119,457,111 × 119,457,111
  4. Step 4: Simplify right side
    79,987,509x = 14,270,001,368,466,320
  5. Step 5: Solve for x
    x = 14,270,001,368,466,320/79,987,509
  6. Step 6: Final answer
    x = 178,402,872.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.