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Finding the Fourth Proportional to 163,940.20, 245,861.70 and 64,042.90

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Solution

The fourth proportional to 163,940.20, 245,861.70 and 64,042.90 is: 96,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,940.20 : 245,861.70 = 64,042.90 : x
  2. Step 2: Convert to fraction form
    163,940.20/245,861.70 = 64,042.90/x
  3. Step 3: Cross multiply
    163,940.20x = 245,861.70 × 64,042.90
  4. Step 4: Simplify right side
    163,940.20x = 15,745,696,266.93
  5. Step 5: Solve for x
    x = 15,745,696,266.93/163,940.20
  6. Step 6: Final answer
    x = 96,045.36

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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.