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Finding the Third Proportional to 68,060 and 99,780

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Solution

The third proportional to 68,060 and 99,780 is: 146,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,060 : 99,780 = 99,780 : x
  2. Step 2: Convert to fraction form
    68,060/99,780 = 99,780/x
  3. Step 3: Cross multiply
    68,060x = 99,780 × 99,780
  4. Step 4: Simplify right side
    68,060x = 9,956,048,400
  5. Step 5: Solve for x
    x = 9,956,048,400/68,060
  6. Step 6: Final answer
    x = 146,283.40

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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.