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Finding the Fourth Proportional to 172,473.99, 258,607.31 and 65,865.03

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Solution

The fourth proportional to 172,473.99, 258,607.31 and 65,865.03 is: 98,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,473.99 : 258,607.31 = 65,865.03 : x
  2. Step 2: Convert to fraction form
    172,473.99/258,607.31 = 65,865.03/x
  3. Step 3: Cross multiply
    172,473.99x = 258,607.31 × 65,865.03
  4. Step 4: Simplify right side
    172,473.99x = 17,033,177,902.04
  5. Step 5: Solve for x
    x = 17,033,177,902.04/172,473.99
  6. Step 6: Final answer
    x = 98,757.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.