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Finding the Fourth Proportional to 136,093.42, 187,748.31 and 79,479.82

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Solution

The fourth proportional to 136,093.42, 187,748.31 and 79,479.82 is: 109,646.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,093.42 : 187,748.31 = 79,479.82 : x
  2. Step 2: Convert to fraction form
    136,093.42/187,748.31 = 79,479.82/x
  3. Step 3: Cross multiply
    136,093.42x = 187,748.31 × 79,479.82
  4. Step 4: Simplify right side
    136,093.42x = 14,922,201,884.10
  5. Step 5: Solve for x
    x = 14,922,201,884.10/136,093.42
  6. Step 6: Final answer
    x = 109,646.76

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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.