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Finding the Fourth Proportional to 122,304.45, 168,623.89 and 79,207.79

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Solution

The fourth proportional to 122,304.45, 168,623.89 and 79,207.79 is: 109,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,304.45 : 168,623.89 = 79,207.79 : x
  2. Step 2: Convert to fraction form
    122,304.45/168,623.89 = 79,207.79/x
  3. Step 3: Cross multiply
    122,304.45x = 168,623.89 × 79,207.79
  4. Step 4: Simplify right side
    122,304.45x = 13,356,326,021.02
  5. Step 5: Solve for x
    x = 13,356,326,021.02/122,304.45
  6. Step 6: Final answer
    x = 109,205.56

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1.5x scale

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.