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Finding the Third Proportional to 79,280.86 and 121,432.92

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Solution

The third proportional to 79,280.86 and 121,432.92 is: 185,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,280.86 : 121,432.92 = 121,432.92 : x
  2. Step 2: Convert to fraction form
    79,280.86/121,432.92 = 121,432.92/x
  3. Step 3: Cross multiply
    79,280.86x = 121,432.92 × 121,432.92
  4. Step 4: Simplify right side
    79,280.86x = 14,745,954,515.10
  5. Step 5: Solve for x
    x = 14,745,954,515.10/79,280.86
  6. Step 6: Final answer
    x = 185,996.40

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.