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Finding the Fourth Proportional to 123,585.64, 170,551.50 and 69,878.73

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Solution

The fourth proportional to 123,585.64, 170,551.50 and 69,878.73 is: 96,434.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,585.64 : 170,551.50 = 69,878.73 : x
  2. Step 2: Convert to fraction form
    123,585.64/170,551.50 = 69,878.73/x
  3. Step 3: Cross multiply
    123,585.64x = 170,551.50 × 69,878.73
  4. Step 4: Simplify right side
    123,585.64x = 11,917,922,219.60
  5. Step 5: Solve for x
    x = 11,917,922,219.60/123,585.64
  6. Step 6: Final answer
    x = 96,434.52

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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.