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Finding the Fourth Proportional to 123,346.64, 170,208.86 and 69,636.96

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Solution

The fourth proportional to 123,346.64, 170,208.86 and 69,636.96 is: 96,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,346.64 : 170,208.86 = 69,636.96 : x
  2. Step 2: Convert to fraction form
    123,346.64/170,208.86 = 69,636.96/x
  3. Step 3: Cross multiply
    123,346.64x = 170,208.86 × 69,636.96
  4. Step 4: Simplify right side
    123,346.64x = 11,852,827,227.28
  5. Step 5: Solve for x
    x = 11,852,827,227.28/123,346.64
  6. Step 6: Final answer
    x = 96,093.64

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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.