Home / 156,146.09-215,481.71-84,525.89

Finding the Fourth Proportional to 156,146.09, 215,481.71 and 84,525.89

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Solution

The fourth proportional to 156,146.09, 215,481.71 and 84,525.89 is: 116,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,146.09 : 215,481.71 = 84,525.89 : x
  2. Step 2: Convert to fraction form
    156,146.09/215,481.71 = 84,525.89/x
  3. Step 3: Cross multiply
    156,146.09x = 215,481.71 × 84,525.89
  4. Step 4: Simplify right side
    156,146.09x = 18,213,782,450.38
  5. Step 5: Solve for x
    x = 18,213,782,450.38/156,146.09
  6. Step 6: Final answer
    x = 116,645.78

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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.