Home / 136,917.10-188,938.82-76,475.70

Finding the Fourth Proportional to 136,917.10, 188,938.82 and 76,475.70

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Solution

The fourth proportional to 136,917.10, 188,938.82 and 76,475.70 is: 105,532.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,917.10 : 188,938.82 = 76,475.70 : x
  2. Step 2: Convert to fraction form
    136,917.10/188,938.82 = 76,475.70/x
  3. Step 3: Cross multiply
    136,917.10x = 188,938.82 × 76,475.70
  4. Step 4: Simplify right side
    136,917.10x = 14,449,228,516.67
  5. Step 5: Solve for x
    x = 14,449,228,516.67/136,917.10
  6. Step 6: Final answer
    x = 105,532.68

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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.