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Finding the Fourth Proportional to 136,423.87, 188,258.64 and 75,993.92

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Solution

The fourth proportional to 136,423.87, 188,258.64 and 75,993.92 is: 104,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,423.87 : 188,258.64 = 75,993.92 : x
  2. Step 2: Convert to fraction form
    136,423.87/188,258.64 = 75,993.92/x
  3. Step 3: Cross multiply
    136,423.87x = 188,258.64 × 75,993.92
  4. Step 4: Simplify right side
    136,423.87x = 14,306,512,027.47
  5. Step 5: Solve for x
    x = 14,306,512,027.47/136,423.87
  6. Step 6: Final answer
    x = 104,868.10

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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.