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Finding the Fourth Proportional to 122,373, 168,970.32 and 79,372.92

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Solution

The fourth proportional to 122,373, 168,970.32 and 79,372.92 is: 109,596.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,373 : 168,970.32 = 79,372.92 : x
  2. Step 2: Convert to fraction form
    122,373/168,970.32 = 79,372.92/x
  3. Step 3: Cross multiply
    122,373x = 168,970.32 × 79,372.92
  4. Step 4: Simplify right side
    122,373x = 13,411,667,691.73
  5. Step 5: Solve for x
    x = 13,411,667,691.73/122,373
  6. Step 6: Final answer
    x = 109,596.62

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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.