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Finding the Fourth Proportional to 218,615.70, 327,923.55 and 125,130.90

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Solution

The fourth proportional to 218,615.70, 327,923.55 and 125,130.90 is: 187,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,615.70 : 327,923.55 = 125,130.90 : x
  2. Step 2: Convert to fraction form
    218,615.70/327,923.55 = 125,130.90/x
  3. Step 3: Cross multiply
    218,615.70x = 327,923.55 × 125,130.90
  4. Step 4: Simplify right side
    218,615.70x = 41,033,368,942.70
  5. Step 5: Solve for x
    x = 41,033,368,942.70/218,615.70
  6. Step 6: Final answer
    x = 187,696.35

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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.