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Finding the Fourth Proportional to 172,166.56, 258,327.74 and 87,883.20

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Solution

The fourth proportional to 172,166.56, 258,327.74 and 87,883.20 is: 131,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,166.56 : 258,327.74 = 87,883.20 : x
  2. Step 2: Convert to fraction form
    172,166.56/258,327.74 = 87,883.20/x
  3. Step 3: Cross multiply
    172,166.56x = 258,327.74 × 87,883.20
  4. Step 4: Simplify right side
    172,166.56x = 22,702,668,439.97
  5. Step 5: Solve for x
    x = 22,702,668,439.97/172,166.56
  6. Step 6: Final answer
    x = 131,864.56

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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.