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Finding the Fourth Proportional to 172,153.56, 258,245.23 and 47,494.56

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Solution

The fourth proportional to 172,153.56, 258,245.23 and 47,494.56 is: 71,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,153.56 : 258,245.23 = 47,494.56 : x
  2. Step 2: Convert to fraction form
    172,153.56/258,245.23 = 47,494.56/x
  3. Step 3: Cross multiply
    172,153.56x = 258,245.23 × 47,494.56
  4. Step 4: Simplify right side
    172,153.56x = 12,265,243,570.95
  5. Step 5: Solve for x
    x = 12,265,243,570.95/172,153.56
  6. Step 6: Final answer
    x = 71,245.95

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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.