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Finding the Fourth Proportional to 122,348.64, 168,900.47 and 82,047.70

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Solution

The fourth proportional to 122,348.64, 168,900.47 and 82,047.70 is: 113,265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,348.64 : 168,900.47 = 82,047.70 : x
  2. Step 2: Convert to fraction form
    122,348.64/168,900.47 = 82,047.70/x
  3. Step 3: Cross multiply
    122,348.64x = 168,900.47 × 82,047.70
  4. Step 4: Simplify right side
    122,348.64x = 13,857,895,092.42
  5. Step 5: Solve for x
    x = 13,857,895,092.42/122,348.64
  6. Step 6: Final answer
    x = 113,265.62

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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.