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Finding the Fourth Proportional to 172,575.80, 258,824.68 and 67,340.60

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Solution

The fourth proportional to 172,575.80, 258,824.68 and 67,340.60 is: 100,995.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,575.80 : 258,824.68 = 67,340.60 : x
  2. Step 2: Convert to fraction form
    172,575.80/258,824.68 = 67,340.60/x
  3. Step 3: Cross multiply
    172,575.80x = 258,824.68 × 67,340.60
  4. Step 4: Simplify right side
    172,575.80x = 17,429,409,246.01
  5. Step 5: Solve for x
    x = 17,429,409,246.01/172,575.80
  6. Step 6: Final answer
    x = 100,995.67

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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.