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Finding the Fourth Proportional to 128,043.70, 192,065.55 and 34,549.30

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Solution

The fourth proportional to 128,043.70, 192,065.55 and 34,549.30 is: 51,823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,043.70 : 192,065.55 = 34,549.30 : x
  2. Step 2: Convert to fraction form
    128,043.70/192,065.55 = 34,549.30/x
  3. Step 3: Cross multiply
    128,043.70x = 192,065.55 × 34,549.30
  4. Step 4: Simplify right side
    128,043.70x = 6,635,730,306.62
  5. Step 5: Solve for x
    x = 6,635,730,306.62/128,043.70
  6. Step 6: Final answer
    x = 51,823.95

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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.