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Finding the Third Proportional to 128,683 and 185,640

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Solution

The third proportional to 128,683 and 185,640 is: 267,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,683 : 185,640 = 185,640 : x
  2. Step 2: Convert to fraction form
    128,683/185,640 = 185,640/x
  3. Step 3: Cross multiply
    128,683x = 185,640 × 185,640
  4. Step 4: Simplify right side
    128,683x = 34,462,209,600
  5. Step 5: Solve for x
    x = 34,462,209,600/128,683
  6. Step 6: Final answer
    x = 267,807.01

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.