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Finding the Fourth Proportional to 122,514.70, 169,068.30 and 68,065.69

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Solution

The fourth proportional to 122,514.70, 169,068.30 and 68,065.69 is: 93,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,514.70 : 169,068.30 = 68,065.69 : x
  2. Step 2: Convert to fraction form
    122,514.70/169,068.30 = 68,065.69/x
  3. Step 3: Cross multiply
    122,514.70x = 169,068.30 × 68,065.69
  4. Step 4: Simplify right side
    122,514.70x = 11,507,750,496.63
  5. Step 5: Solve for x
    x = 11,507,750,496.63/122,514.70
  6. Step 6: Final answer
    x = 93,929.55

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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.