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Finding the Fourth Proportional to 192,395.40, 288,657.09 and 121,235.82

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Solution

The fourth proportional to 192,395.40, 288,657.09 and 121,235.82 is: 181,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,395.40 : 288,657.09 = 121,235.82 : x
  2. Step 2: Convert to fraction form
    192,395.40/288,657.09 = 121,235.82/x
  3. Step 3: Cross multiply
    192,395.40x = 288,657.09 × 121,235.82
  4. Step 4: Simplify right side
    192,395.40x = 34,995,579,004.96
  5. Step 5: Solve for x
    x = 34,995,579,004.96/192,395.40
  6. Step 6: Final answer
    x = 181,894.05

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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.