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Finding the Fourth Proportional to 163,805.38, 245,709.42 and 45,485.94

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Solution

The fourth proportional to 163,805.38, 245,709.42 and 45,485.94 is: 68,229.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,805.38 : 245,709.42 = 45,485.94 : x
  2. Step 2: Convert to fraction form
    163,805.38/245,709.42 = 45,485.94/x
  3. Step 3: Cross multiply
    163,805.38x = 245,709.42 × 45,485.94
  4. Step 4: Simplify right side
    163,805.38x = 11,176,323,935.55
  5. Step 5: Solve for x
    x = 11,176,323,935.55/163,805.38
  6. Step 6: Final answer
    x = 68,229.28

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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.