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Finding the Fourth Proportional to 163,940.70, 245,911.05 and 149,166.30

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Solution

The fourth proportional to 163,940.70, 245,911.05 and 149,166.30 is: 223,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,940.70 : 245,911.05 = 149,166.30 : x
  2. Step 2: Convert to fraction form
    163,940.70/245,911.05 = 149,166.30/x
  3. Step 3: Cross multiply
    163,940.70x = 245,911.05 × 149,166.30
  4. Step 4: Simplify right side
    163,940.70x = 36,681,641,457.62
  5. Step 5: Solve for x
    x = 36,681,641,457.62/163,940.70
  6. Step 6: Final answer
    x = 223,749.45

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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.