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Finding the Fourth Proportional to 122,251.56, 168,707.80 and 71,299.68

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Solution

The fourth proportional to 122,251.56, 168,707.80 and 71,299.68 is: 98,393.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,251.56 : 168,707.80 = 71,299.68 : x
  2. Step 2: Convert to fraction form
    122,251.56/168,707.80 = 71,299.68/x
  3. Step 3: Cross multiply
    122,251.56x = 168,707.80 × 71,299.68
  4. Step 4: Simplify right side
    122,251.56x = 12,028,812,153.50
  5. Step 5: Solve for x
    x = 12,028,812,153.50/122,251.56
  6. Step 6: Final answer
    x = 98,393.94

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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.