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Finding the Fourth Proportional to 113,670.45, 170,468.78 and 53,689.68

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Solution

The fourth proportional to 113,670.45, 170,468.78 and 53,689.68 is: 80,517.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,670.45 : 170,468.78 = 53,689.68 : x
  2. Step 2: Convert to fraction form
    113,670.45/170,468.78 = 53,689.68/x
  3. Step 3: Cross multiply
    113,670.45x = 170,468.78 × 53,689.68
  4. Step 4: Simplify right side
    113,670.45x = 9,152,413,979.74
  5. Step 5: Solve for x
    x = 9,152,413,979.74/113,670.45
  6. Step 6: Final answer
    x = 80,517.09

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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.