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Finding the Fourth Proportional to 172,235.60, 258,402.81 and 72,344.42

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Solution

The fourth proportional to 172,235.60, 258,402.81 and 72,344.42 is: 108,537.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,235.60 : 258,402.81 = 72,344.42 : x
  2. Step 2: Convert to fraction form
    172,235.60/258,402.81 = 72,344.42/x
  3. Step 3: Cross multiply
    172,235.60x = 258,402.81 × 72,344.42
  4. Step 4: Simplify right side
    172,235.60x = 18,694,001,415.82
  5. Step 5: Solve for x
    x = 18,694,001,415.82/172,235.60
  6. Step 6: Final answer
    x = 108,537.38

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1.5x scale

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.