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Finding the Fourth Proportional to 172,153.85, 258,245.65 and 47,494.85

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Solution

The fourth proportional to 172,153.85, 258,245.65 and 47,494.85 is: 71,246.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,153.85 : 258,245.65 = 47,494.85 : x
  2. Step 2: Convert to fraction form
    172,153.85/258,245.65 = 47,494.85/x
  3. Step 3: Cross multiply
    172,153.85x = 258,245.65 × 47,494.85
  4. Step 4: Simplify right side
    172,153.85x = 12,265,338,409.90
  5. Step 5: Solve for x
    x = 12,265,338,409.90/172,153.85
  6. Step 6: Final answer
    x = 71,246.38

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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.