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Finding the Fourth Proportional to 163,859.72, 245,789.44 and 45,531

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Solution

The fourth proportional to 163,859.72, 245,789.44 and 45,531 is: 68,296.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,859.72 : 245,789.44 = 45,531 : x
  2. Step 2: Convert to fraction form
    163,859.72/245,789.44 = 45,531/x
  3. Step 3: Cross multiply
    163,859.72x = 245,789.44 × 45,531
  4. Step 4: Simplify right side
    163,859.72x = 11,191,038,992.64
  5. Step 5: Solve for x
    x = 11,191,038,992.64/163,859.72
  6. Step 6: Final answer
    x = 68,296.46

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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.