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Finding the Fourth Proportional to 136,697.80, 204,585.90 and 125,638.60

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Solution

The fourth proportional to 136,697.80, 204,585.90 and 125,638.60 is: 188,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,697.80 : 204,585.90 = 125,638.60 : x
  2. Step 2: Convert to fraction form
    136,697.80/204,585.90 = 125,638.60/x
  3. Step 3: Cross multiply
    136,697.80x = 204,585.90 × 125,638.60
  4. Step 4: Simplify right side
    136,697.80x = 25,703,886,055.74
  5. Step 5: Solve for x
    x = 25,703,886,055.74/136,697.80
  6. Step 6: Final answer
    x = 188,034.38

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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.