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Finding the Fourth Proportional to 136,618.73, 204,878.73 and 57,739.10

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Solution

The fourth proportional to 136,618.73, 204,878.73 and 57,739.10 is: 86,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,618.73 : 204,878.73 = 57,739.10 : x
  2. Step 2: Convert to fraction form
    136,618.73/204,878.73 = 57,739.10/x
  3. Step 3: Cross multiply
    136,618.73x = 204,878.73 × 57,739.10
  4. Step 4: Simplify right side
    136,618.73x = 11,829,513,479.34
  5. Step 5: Solve for x
    x = 11,829,513,479.34/136,618.73
  6. Step 6: Final answer
    x = 86,587.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.