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Finding the Fourth Proportional to 123,042.30, 184,563.45 and 103,359.30

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Solution

The fourth proportional to 123,042.30, 184,563.45 and 103,359.30 is: 155,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,042.30 : 184,563.45 = 103,359.30 : x
  2. Step 2: Convert to fraction form
    123,042.30/184,563.45 = 103,359.30/x
  3. Step 3: Cross multiply
    123,042.30x = 184,563.45 × 103,359.30
  4. Step 4: Simplify right side
    123,042.30x = 19,076,348,997.59
  5. Step 5: Solve for x
    x = 19,076,348,997.59/123,042.30
  6. Step 6: Final answer
    x = 155,038.95

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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.