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Finding the Fourth Proportional to 128,496.02, 192,802.35 and 76,008.02

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Solution

The fourth proportional to 128,496.02, 192,802.35 and 76,008.02 is: 114,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,496.02 : 192,802.35 = 76,008.02 : x
  2. Step 2: Convert to fraction form
    128,496.02/192,802.35 = 76,008.02/x
  3. Step 3: Cross multiply
    128,496.02x = 192,802.35 × 76,008.02
  4. Step 4: Simplify right side
    128,496.02x = 14,654,524,874.85
  5. Step 5: Solve for x
    x = 14,654,524,874.85/128,496.02
  6. Step 6: Final answer
    x = 114,046.53

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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.