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Finding the Fourth Proportional to 163,649.86, 245,474.82 and 45,321.22

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Solution

The fourth proportional to 163,649.86, 245,474.82 and 45,321.22 is: 67,981.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,649.86 : 245,474.82 = 45,321.22 : x
  2. Step 2: Convert to fraction form
    163,649.86/245,474.82 = 45,321.22/x
  3. Step 3: Cross multiply
    163,649.86x = 245,474.82 × 45,321.22
  4. Step 4: Simplify right side
    163,649.86x = 11,125,218,321.68
  5. Step 5: Solve for x
    x = 11,125,218,321.68/163,649.86
  6. Step 6: Final answer
    x = 67,981.84

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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.