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Finding the Fourth Proportional to 128,499.66, 192,726.27 and 34,983.54

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Solution

The fourth proportional to 128,499.66, 192,726.27 and 34,983.54 is: 52,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,499.66 : 192,726.27 = 34,983.54 : x
  2. Step 2: Convert to fraction form
    128,499.66/192,726.27 = 34,983.54/x
  3. Step 3: Cross multiply
    128,499.66x = 192,726.27 × 34,983.54
  4. Step 4: Simplify right side
    128,499.66x = 6,742,247,175.60
  5. Step 5: Solve for x
    x = 6,742,247,175.60/128,499.66
  6. Step 6: Final answer
    x = 52,468.99

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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.