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Finding the Fourth Proportional to 122,175.96, 168,602.60 and 74,429.31

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Solution

The fourth proportional to 122,175.96, 168,602.60 and 74,429.31 is: 102,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,175.96 : 168,602.60 = 74,429.31 : x
  2. Step 2: Convert to fraction form
    122,175.96/168,602.60 = 74,429.31/x
  3. Step 3: Cross multiply
    122,175.96x = 168,602.60 × 74,429.31
  4. Step 4: Simplify right side
    122,175.96x = 12,548,974,736.02
  5. Step 5: Solve for x
    x = 12,548,974,736.02/122,175.96
  6. Step 6: Final answer
    x = 102,712.31

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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.