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Finding the Fourth Proportional to 122,304.51, 168,623.98 and 79,207.86

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Solution

The fourth proportional to 122,304.51, 168,623.98 and 79,207.86 is: 109,205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,304.51 : 168,623.98 = 79,207.86 : x
  2. Step 2: Convert to fraction form
    122,304.51/168,623.98 = 79,207.86/x
  3. Step 3: Cross multiply
    122,304.51x = 168,623.98 × 79,207.86
  4. Step 4: Simplify right side
    122,304.51x = 13,356,344,600.48
  5. Step 5: Solve for x
    x = 13,356,344,600.48/122,304.51
  6. Step 6: Final answer
    x = 109,205.66

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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.