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Finding the Third Proportional to 130,641.50 and 190,921

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Solution

The third proportional to 130,641.50 and 190,921 is: 279,014.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,641.50 : 190,921 = 190,921 : x
  2. Step 2: Convert to fraction form
    130,641.50/190,921 = 190,921/x
  3. Step 3: Cross multiply
    130,641.50x = 190,921 × 190,921
  4. Step 4: Simplify right side
    130,641.50x = 36,450,828,241
  5. Step 5: Solve for x
    x = 36,450,828,241/130,641.50
  6. Step 6: Final answer
    x = 279,014.16

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.