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Finding the Fourth Proportional to 172,573.35, 258,896.99 and 97,728.87

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Solution

The fourth proportional to 172,573.35, 258,896.99 and 97,728.87 is: 146,614.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,573.35 : 258,896.99 = 97,728.87 : x
  2. Step 2: Convert to fraction form
    172,573.35/258,896.99 = 97,728.87/x
  3. Step 3: Cross multiply
    172,573.35x = 258,896.99 × 97,728.87
  4. Step 4: Simplify right side
    172,573.35x = 25,301,709,790.46
  5. Step 5: Solve for x
    x = 25,301,709,790.46/172,573.35
  6. Step 6: Final answer
    x = 146,614.24

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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.