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Finding the Fourth Proportional to 122,304.42, 168,708.42 and 76,910.40

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Solution

The fourth proportional to 122,304.42, 168,708.42 and 76,910.40 is: 106,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,304.42 : 168,708.42 = 76,910.40 : x
  2. Step 2: Convert to fraction form
    122,304.42/168,708.42 = 76,910.40/x
  3. Step 3: Cross multiply
    122,304.42x = 168,708.42 × 76,910.40
  4. Step 4: Simplify right side
    122,304.42x = 12,975,432,065.57
  5. Step 5: Solve for x
    x = 12,975,432,065.57/122,304.42
  6. Step 6: Final answer
    x = 106,091.28

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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.