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Finding the Fourth Proportional to 136,949.94, 188,990.52 and 75,695.72

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Solution

The fourth proportional to 136,949.94, 188,990.52 and 75,695.72 is: 104,459.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,949.94 : 188,990.52 = 75,695.72 : x
  2. Step 2: Convert to fraction form
    136,949.94/188,990.52 = 75,695.72/x
  3. Step 3: Cross multiply
    136,949.94x = 188,990.52 × 75,695.72
  4. Step 4: Simplify right side
    136,949.94x = 14,305,772,255.76
  5. Step 5: Solve for x
    x = 14,305,772,255.76/136,949.94
  6. Step 6: Final answer
    x = 104,459.87

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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.