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Finding the Fourth Proportional to 128,032.70, 192,049.05 and 117,923.90

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Solution

The fourth proportional to 128,032.70, 192,049.05 and 117,923.90 is: 176,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,032.70 : 192,049.05 = 117,923.90 : x
  2. Step 2: Convert to fraction form
    128,032.70/192,049.05 = 117,923.90/x
  3. Step 3: Cross multiply
    128,032.70x = 192,049.05 × 117,923.90
  4. Step 4: Simplify right side
    128,032.70x = 22,647,172,967.30
  5. Step 5: Solve for x
    x = 22,647,172,967.30/128,032.70
  6. Step 6: Final answer
    x = 176,885.85

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1.5x scale

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.