Home / 136,922.10-188,945.72-76,480.70

Finding the Fourth Proportional to 136,922.10, 188,945.72 and 76,480.70

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Solution

The fourth proportional to 136,922.10, 188,945.72 and 76,480.70 is: 105,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,922.10 : 188,945.72 = 76,480.70 : x
  2. Step 2: Convert to fraction form
    136,922.10/188,945.72 = 76,480.70/x
  3. Step 3: Cross multiply
    136,922.10x = 188,945.72 × 76,480.70
  4. Step 4: Simplify right side
    136,922.10x = 14,450,700,927.60
  5. Step 5: Solve for x
    x = 14,450,700,927.60/136,922.10
  6. Step 6: Final answer
    x = 105,539.58

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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.