Home / 136,917.09-188,938.83-76,475.70

Finding the Fourth Proportional to 136,917.09, 188,938.83 and 76,475.70

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Solution

The fourth proportional to 136,917.09, 188,938.83 and 76,475.70 is: 105,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,917.09 : 188,938.83 = 76,475.70 : x
  2. Step 2: Convert to fraction form
    136,917.09/188,938.83 = 76,475.70/x
  3. Step 3: Cross multiply
    136,917.09x = 188,938.83 × 76,475.70
  4. Step 4: Simplify right side
    136,917.09x = 14,449,228,336.74
  5. Step 5: Solve for x
    x = 14,449,228,336.74/136,917.09
  6. Step 6: Final answer
    x = 105,532.69

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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.