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Finding the Fourth Proportional to 123,317.64, 170,181 and 69,602.76

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Solution

The fourth proportional to 123,317.64, 170,181 and 69,602.76 is: 96,053.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,317.64 : 170,181 = 69,602.76 : x
  2. Step 2: Convert to fraction form
    123,317.64/170,181 = 69,602.76/x
  3. Step 3: Cross multiply
    123,317.64x = 170,181 × 69,602.76
  4. Step 4: Simplify right side
    123,317.64x = 11,845,067,299.56
  5. Step 5: Solve for x
    x = 11,845,067,299.56/123,317.64
  6. Step 6: Final answer
    x = 96,053.31

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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.