Home / 117,205.89-161,706.17-71,861.18

Finding the Fourth Proportional to 117,205.89, 161,706.17 and 71,861.18

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Solution

The fourth proportional to 117,205.89, 161,706.17 and 71,861.18 is: 99,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,205.89 : 161,706.17 = 71,861.18 : x
  2. Step 2: Convert to fraction form
    117,205.89/161,706.17 = 71,861.18/x
  3. Step 3: Cross multiply
    117,205.89x = 161,706.17 × 71,861.18
  4. Step 4: Simplify right side
    117,205.89x = 11,620,395,560.60
  5. Step 5: Solve for x
    x = 11,620,395,560.60/117,205.89
  6. Step 6: Final answer
    x = 99,145.15

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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.