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Finding the Fourth Proportional to 163,539.30, 245,114.55 and 68,769.30

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Solution

The fourth proportional to 163,539.30, 245,114.55 and 68,769.30 is: 103,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,539.30 : 245,114.55 = 68,769.30 : x
  2. Step 2: Convert to fraction form
    163,539.30/245,114.55 = 68,769.30/x
  3. Step 3: Cross multiply
    163,539.30x = 245,114.55 × 68,769.30
  4. Step 4: Simplify right side
    163,539.30x = 16,856,356,023.32
  5. Step 5: Solve for x
    x = 16,856,356,023.32/163,539.30
  6. Step 6: Final answer
    x = 103,072.20

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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.