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Finding the Fourth Proportional to 163,068.79, 245,069.75 and 80,021.11

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Solution

The fourth proportional to 163,068.79, 245,069.75 and 80,021.11 is: 120,260.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,068.79 : 245,069.75 = 80,021.11 : x
  2. Step 2: Convert to fraction form
    163,068.79/245,069.75 = 80,021.11/x
  3. Step 3: Cross multiply
    163,068.79x = 245,069.75 × 80,021.11
  4. Step 4: Simplify right side
    163,068.79x = 19,610,753,422.42
  5. Step 5: Solve for x
    x = 19,610,753,422.42/163,068.79
  6. Step 6: Final answer
    x = 120,260.62

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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.