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Finding the Fourth Proportional to 137,719.70, 206,579.55 and 118,036.70

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Solution

The fourth proportional to 137,719.70, 206,579.55 and 118,036.70 is: 177,055.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,719.70 : 206,579.55 = 118,036.70 : x
  2. Step 2: Convert to fraction form
    137,719.70/206,579.55 = 118,036.70/x
  3. Step 3: Cross multiply
    137,719.70x = 206,579.55 × 118,036.70
  4. Step 4: Simplify right side
    137,719.70x = 24,383,968,369.49
  5. Step 5: Solve for x
    x = 24,383,968,369.49/137,719.70
  6. Step 6: Final answer
    x = 177,055.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.