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Finding the Fourth Proportional to 148,393.89, 204,783.66 and 80,411.40

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Solution

The fourth proportional to 148,393.89, 204,783.66 and 80,411.40 is: 110,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,393.89 : 204,783.66 = 80,411.40 : x
  2. Step 2: Convert to fraction form
    148,393.89/204,783.66 = 80,411.40/x
  3. Step 3: Cross multiply
    148,393.89x = 204,783.66 × 80,411.40
  4. Step 4: Simplify right side
    148,393.89x = 16,466,940,797.72
  5. Step 5: Solve for x
    x = 16,466,940,797.72/148,393.89
  6. Step 6: Final answer
    x = 110,967.78

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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.