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Finding the Fourth Proportional to 172,487.63, 258,765.30 and 60,171.51

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Solution

The fourth proportional to 172,487.63, 258,765.30 and 60,171.51 is: 90,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,487.63 : 258,765.30 = 60,171.51 : x
  2. Step 2: Convert to fraction form
    172,487.63/258,765.30 = 60,171.51/x
  3. Step 3: Cross multiply
    172,487.63x = 258,765.30 × 60,171.51
  4. Step 4: Simplify right side
    172,487.63x = 15,570,298,351.42
  5. Step 5: Solve for x
    x = 15,570,298,351.42/172,487.63
  6. Step 6: Final answer
    x = 90,269.07

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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.