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Finding the Third Proportional to 72,000 and 155,488

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Solution

The third proportional to 72,000 and 155,488 is: 335,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000 : 155,488 = 155,488 : x
  2. Step 2: Convert to fraction form
    72,000/155,488 = 155,488/x
  3. Step 3: Cross multiply
    72,000x = 155,488 × 155,488
  4. Step 4: Simplify right side
    72,000x = 24,176,518,144
  5. Step 5: Solve for x
    x = 24,176,518,144/72,000
  6. Step 6: Final answer
    x = 335,784.97

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.