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Finding the Fourth Proportional to 172,573.52, 258,812.78 and 109,298.74

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Solution

The fourth proportional to 172,573.52, 258,812.78 and 109,298.74 is: 163,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,573.52 : 258,812.78 = 109,298.74 : x
  2. Step 2: Convert to fraction form
    172,573.52/258,812.78 = 109,298.74/x
  3. Step 3: Cross multiply
    172,573.52x = 258,812.78 × 109,298.74
  4. Step 4: Simplify right side
    172,573.52x = 28,287,910,749.90
  5. Step 5: Solve for x
    x = 28,287,910,749.90/172,573.52
  6. Step 6: Final answer
    x = 163,918.03

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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.