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Finding the Fourth Proportional to 163,620, 225,859.91 and 103,178.61

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Solution

The fourth proportional to 163,620, 225,859.91 and 103,178.61 is: 142,427.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,620 : 225,859.91 = 103,178.61 : x
  2. Step 2: Convert to fraction form
    163,620/225,859.91 = 103,178.61/x
  3. Step 3: Cross multiply
    163,620x = 225,859.91 × 103,178.61
  4. Step 4: Simplify right side
    163,620x = 23,303,911,052.63
  5. Step 5: Solve for x
    x = 23,303,911,052.63/163,620
  6. Step 6: Final answer
    x = 142,427.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.