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Finding the Fourth Proportional to 122,394.48, 168,892.20 and 74,659.56

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Solution

The fourth proportional to 122,394.48, 168,892.20 and 74,659.56 is: 103,022.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,394.48 : 168,892.20 = 74,659.56 : x
  2. Step 2: Convert to fraction form
    122,394.48/168,892.20 = 74,659.56/x
  3. Step 3: Cross multiply
    122,394.48x = 168,892.20 × 74,659.56
  4. Step 4: Simplify right side
    122,394.48x = 12,609,417,339.43
  5. Step 5: Solve for x
    x = 12,609,417,339.43/122,394.48
  6. Step 6: Final answer
    x = 103,022.76

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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.