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Finding the Fourth Proportional to 123,443.70, 185,165.55 and 108,669.30

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Solution

The fourth proportional to 123,443.70, 185,165.55 and 108,669.30 is: 163,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,443.70 : 185,165.55 = 108,669.30 : x
  2. Step 2: Convert to fraction form
    123,443.70/185,165.55 = 108,669.30/x
  3. Step 3: Cross multiply
    123,443.70x = 185,165.55 × 108,669.30
  4. Step 4: Simplify right side
    123,443.70x = 20,121,810,702.62
  5. Step 5: Solve for x
    x = 20,121,810,702.62/123,443.70
  6. Step 6: Final answer
    x = 163,003.95

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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.