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Finding the Fourth Proportional to 136,687.30, 204,570.15 and 125,628.10

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Solution

The fourth proportional to 136,687.30, 204,570.15 and 125,628.10 is: 188,018.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,687.30 : 204,570.15 = 125,628.10 : x
  2. Step 2: Convert to fraction form
    136,687.30/204,570.15 = 125,628.10/x
  3. Step 3: Cross multiply
    136,687.30x = 204,570.15 × 125,628.10
  4. Step 4: Simplify right side
    136,687.30x = 25,699,759,261.22
  5. Step 5: Solve for x
    x = 25,699,759,261.22/136,687.30
  6. Step 6: Final answer
    x = 188,018.63

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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.