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Finding the Fourth Proportional to 107,278.31, 160,925.36 and 28,392

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Solution

The fourth proportional to 107,278.31, 160,925.36 and 28,392 is: 42,590.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,278.31 : 160,925.36 = 28,392 : x
  2. Step 2: Convert to fraction form
    107,278.31/160,925.36 = 28,392/x
  3. Step 3: Cross multiply
    107,278.31x = 160,925.36 × 28,392
  4. Step 4: Simplify right side
    107,278.31x = 4,568,992,679.16
  5. Step 5: Solve for x
    x = 4,568,992,679.16/107,278.31
  6. Step 6: Final answer
    x = 42,590.09

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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.