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Finding the Fourth Proportional to 163,778.52, 245,667.80 and 45,449.90

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Solution

The fourth proportional to 163,778.52, 245,667.80 and 45,449.90 is: 68,174.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,778.52 : 245,667.80 = 45,449.90 : x
  2. Step 2: Convert to fraction form
    163,778.52/245,667.80 = 45,449.90/x
  3. Step 3: Cross multiply
    163,778.52x = 245,667.80 × 45,449.90
  4. Step 4: Simplify right side
    163,778.52x = 11,165,576,943.22
  5. Step 5: Solve for x
    x = 11,165,576,943.22/163,778.52
  6. Step 6: Final answer
    x = 68,174.86

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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.