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Finding the Fourth Proportional to 128,393.42, 192,589.58 and 34,898.90

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Solution

The fourth proportional to 128,393.42, 192,589.58 and 34,898.90 is: 52,348.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,393.42 : 192,589.58 = 34,898.90 : x
  2. Step 2: Convert to fraction form
    128,393.42/192,589.58 = 34,898.90/x
  3. Step 3: Cross multiply
    128,393.42x = 192,589.58 × 34,898.90
  4. Step 4: Simplify right side
    128,393.42x = 6,721,164,493.46
  5. Step 5: Solve for x
    x = 6,721,164,493.46/128,393.42
  6. Step 6: Final answer
    x = 52,348.20

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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.