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Finding the Fourth Proportional to 122,242.52, 183,143.81 and 115,031.64

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Solution

The fourth proportional to 122,242.52, 183,143.81 and 115,031.64 is: 172,340.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,242.52 : 183,143.81 = 115,031.64 : x
  2. Step 2: Convert to fraction form
    122,242.52/183,143.81 = 115,031.64/x
  3. Step 3: Cross multiply
    122,242.52x = 183,143.81 × 115,031.64
  4. Step 4: Simplify right side
    122,242.52x = 21,067,333,470.99
  5. Step 5: Solve for x
    x = 21,067,333,470.99/122,242.52
  6. Step 6: Final answer
    x = 172,340.48

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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.