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Finding the Fourth Proportional to 109,260.60, 163,929.30 and 105,420.60

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Solution

The fourth proportional to 109,260.60, 163,929.30 and 105,420.60 is: 158,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,260.60 : 163,929.30 = 105,420.60 : x
  2. Step 2: Convert to fraction form
    109,260.60/163,929.30 = 105,420.60/x
  3. Step 3: Cross multiply
    109,260.60x = 163,929.30 × 105,420.60
  4. Step 4: Simplify right side
    109,260.60x = 17,281,525,163.58
  5. Step 5: Solve for x
    x = 17,281,525,163.58/109,260.60
  6. Step 6: Final answer
    x = 158,167.95

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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.