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Finding the Fourth Proportional to 148,997.63, 205,616.73 and 81,929.63

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Solution

The fourth proportional to 148,997.63, 205,616.73 and 81,929.63 is: 113,062.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,997.63 : 205,616.73 = 81,929.63 : x
  2. Step 2: Convert to fraction form
    148,997.63/205,616.73 = 81,929.63/x
  3. Step 3: Cross multiply
    148,997.63x = 205,616.73 × 81,929.63
  4. Step 4: Simplify right side
    148,997.63x = 16,846,102,610.71
  5. Step 5: Solve for x
    x = 16,846,102,610.71/148,997.63
  6. Step 6: Final answer
    x = 113,062.89

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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.