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Finding the Fourth Proportional to 111,790.75, 154,225.72 and 63,382.49

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Solution

The fourth proportional to 111,790.75, 154,225.72 and 63,382.49 is: 87,442.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,790.75 : 154,225.72 = 63,382.49 : x
  2. Step 2: Convert to fraction form
    111,790.75/154,225.72 = 63,382.49/x
  3. Step 3: Cross multiply
    111,790.75x = 154,225.72 × 63,382.49
  4. Step 4: Simplify right side
    111,790.75x = 9,775,210,155.64
  5. Step 5: Solve for x
    x = 9,775,210,155.64/111,790.75
  6. Step 6: Final answer
    x = 87,442.03

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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.