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Finding the Third Proportional to 68,490 and 100,888.50

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Solution

The third proportional to 68,490 and 100,888.50 is: 148,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,490 : 100,888.50 = 100,888.50 : x
  2. Step 2: Convert to fraction form
    68,490/100,888.50 = 100,888.50/x
  3. Step 3: Cross multiply
    68,490x = 100,888.50 × 100,888.50
  4. Step 4: Simplify right side
    68,490x = 10,178,489,432.25
  5. Step 5: Solve for x
    x = 10,178,489,432.25/68,490
  6. Step 6: Final answer
    x = 148,612.78

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.