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Finding the Fourth Proportional to 188,435.55, 282,653.33 and 108,719.40

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Solution

The fourth proportional to 188,435.55, 282,653.33 and 108,719.40 is: 163,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,435.55 : 282,653.33 = 108,719.40 : x
  2. Step 2: Convert to fraction form
    188,435.55/282,653.33 = 108,719.40/x
  3. Step 3: Cross multiply
    188,435.55x = 282,653.33 × 108,719.40
  4. Step 4: Simplify right side
    188,435.55x = 30,729,899,902.01
  5. Step 5: Solve for x
    x = 30,729,899,902.01/188,435.55
  6. Step 6: Final answer
    x = 163,079.10

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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.