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Finding the Fourth Proportional to 188,687.65, 260,762.55 and 154,642.44

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Solution

The fourth proportional to 188,687.65, 260,762.55 and 154,642.44 is: 213,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,687.65 : 260,762.55 = 154,642.44 : x
  2. Step 2: Convert to fraction form
    188,687.65/260,762.55 = 154,642.44/x
  3. Step 3: Cross multiply
    188,687.65x = 260,762.55 × 154,642.44
  4. Step 4: Simplify right side
    188,687.65x = 40,324,956,992.62
  5. Step 5: Solve for x
    x = 40,324,956,992.62/188,687.65
  6. Step 6: Final answer
    x = 213,712.75

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1.5x scale

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.