Home / 136,627.12-188,546.46-76,201.72

Finding the Fourth Proportional to 136,627.12, 188,546.46 and 76,201.72

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Solution

The fourth proportional to 136,627.12, 188,546.46 and 76,201.72 is: 105,158.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,627.12 : 188,546.46 = 76,201.72 : x
  2. Step 2: Convert to fraction form
    136,627.12/188,546.46 = 76,201.72/x
  3. Step 3: Cross multiply
    136,627.12x = 188,546.46 × 76,201.72
  4. Step 4: Simplify right side
    136,627.12x = 14,367,564,551.91
  5. Step 5: Solve for x
    x = 14,367,564,551.91/136,627.12
  6. Step 6: Final answer
    x = 105,158.95

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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.