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Finding the Fourth Proportional to 122,514.87, 169,070.54 and 68,799.92

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Solution

The fourth proportional to 122,514.87, 169,070.54 and 68,799.92 is: 94,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,514.87 : 169,070.54 = 68,799.92 : x
  2. Step 2: Convert to fraction form
    122,514.87/169,070.54 = 68,799.92/x
  3. Step 3: Cross multiply
    122,514.87x = 169,070.54 × 68,799.92
  4. Step 4: Simplify right side
    122,514.87x = 11,632,038,437.00
  5. Step 5: Solve for x
    x = 11,632,038,437.00/122,514.87
  6. Step 6: Final answer
    x = 94,943.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.