Home / 123,861.21-170,930.70-70,157.34

Finding the Fourth Proportional to 123,861.21, 170,930.70 and 70,157.34

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Solution

The fourth proportional to 123,861.21, 170,930.70 and 70,157.34 is: 96,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,861.21 : 170,930.70 = 70,157.34 : x
  2. Step 2: Convert to fraction form
    123,861.21/170,930.70 = 70,157.34/x
  3. Step 3: Cross multiply
    123,861.21x = 170,930.70 × 70,157.34
  4. Step 4: Simplify right side
    123,861.21x = 11,992,043,236.34
  5. Step 5: Solve for x
    x = 11,992,043,236.34/123,861.21
  6. Step 6: Final answer
    x = 96,818.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.