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Finding the Fourth Proportional to 122,308.62, 168,769.59 and 67,859.92

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Solution

The fourth proportional to 122,308.62, 168,769.59 and 67,859.92 is: 93,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,308.62 : 168,769.59 = 67,859.92 : x
  2. Step 2: Convert to fraction form
    122,308.62/168,769.59 = 67,859.92/x
  3. Step 3: Cross multiply
    122,308.62x = 168,769.59 × 67,859.92
  4. Step 4: Simplify right side
    122,308.62x = 11,452,690,875.83
  5. Step 5: Solve for x
    x = 11,452,690,875.83/122,308.62
  6. Step 6: Final answer
    x = 93,637.64

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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.