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Finding the Third Proportional to 129,816 and 272,752.88

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Solution

The third proportional to 129,816 and 272,752.88 is: 573,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816 : 272,752.88 = 272,752.88 : x
  2. Step 2: Convert to fraction form
    129,816/272,752.88 = 272,752.88/x
  3. Step 3: Cross multiply
    129,816x = 272,752.88 × 272,752.88
  4. Step 4: Simplify right side
    129,816x = 74,394,130,820.77
  5. Step 5: Solve for x
    x = 74,394,130,820.77/129,816
  6. Step 6: Final answer
    x = 573,073.66

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.