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Finding the Fourth Proportional to 148,605.89, 205,076.09 and 84,945.05

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Solution

The fourth proportional to 148,605.89, 205,076.09 and 84,945.05 is: 117,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,605.89 : 205,076.09 = 84,945.05 : x
  2. Step 2: Convert to fraction form
    148,605.89/205,076.09 = 84,945.05/x
  3. Step 3: Cross multiply
    148,605.89x = 205,076.09 × 84,945.05
  4. Step 4: Simplify right side
    148,605.89x = 17,420,197,268.75
  5. Step 5: Solve for x
    x = 17,420,197,268.75/148,605.89
  6. Step 6: Final answer
    x = 117,224.14

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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.