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Finding the Third Proportional to 75,711 and 105,886.50

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Solution

The third proportional to 75,711 and 105,886.50 is: 148,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,711 : 105,886.50 = 105,886.50 : x
  2. Step 2: Convert to fraction form
    75,711/105,886.50 = 105,886.50/x
  3. Step 3: Cross multiply
    75,711x = 105,886.50 × 105,886.50
  4. Step 4: Simplify right side
    75,711x = 11,211,950,882.25
  5. Step 5: Solve for x
    x = 11,211,950,882.25/75,711
  6. Step 6: Final answer
    x = 148,088.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.