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Finding the Fourth Proportional to 128,803.60, 193,183.26 and 34,034.80

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Solution

The fourth proportional to 128,803.60, 193,183.26 and 34,034.80 is: 51,046.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,803.60 : 193,183.26 = 34,034.80 : x
  2. Step 2: Convert to fraction form
    128,803.60/193,183.26 = 34,034.80/x
  3. Step 3: Cross multiply
    128,803.60x = 193,183.26 × 34,034.80
  4. Step 4: Simplify right side
    128,803.60x = 6,574,953,617.45
  5. Step 5: Solve for x
    x = 6,574,953,617.45/128,803.60
  6. Step 6: Final answer
    x = 51,046.35

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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.