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Finding the Fourth Proportional to 128,154.66, 192,273.12 and 61,599.62

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Solution

The fourth proportional to 128,154.66, 192,273.12 and 61,599.62 is: 92,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.66 : 192,273.12 = 61,599.62 : x
  2. Step 2: Convert to fraction form
    128,154.66/192,273.12 = 61,599.62/x
  3. Step 3: Cross multiply
    128,154.66x = 192,273.12 × 61,599.62
  4. Step 4: Simplify right side
    128,154.66x = 11,843,950,166.85
  5. Step 5: Solve for x
    x = 11,843,950,166.85/128,154.66
  6. Step 6: Final answer
    x = 92,419.19

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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.