Home / 136,890.37-188,906.70-76,461.85

Finding the Fourth Proportional to 136,890.37, 188,906.70 and 76,461.85

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Solution

The fourth proportional to 136,890.37, 188,906.70 and 76,461.85 is: 105,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,890.37 : 188,906.70 = 76,461.85 : x
  2. Step 2: Convert to fraction form
    136,890.37/188,906.70 = 76,461.85/x
  3. Step 3: Cross multiply
    136,890.37x = 188,906.70 × 76,461.85
  4. Step 4: Simplify right side
    136,890.37x = 14,444,155,759.40
  5. Step 5: Solve for x
    x = 14,444,155,759.40/136,890.37
  6. Step 6: Final answer
    x = 105,516.23

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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.