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Finding the Fourth Proportional to 149,059.72, 223,675.70 and 78,939.04

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Solution

The fourth proportional to 149,059.72, 223,675.70 and 78,939.04 is: 118,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,059.72 : 223,675.70 = 78,939.04 : x
  2. Step 2: Convert to fraction form
    149,059.72/223,675.70 = 78,939.04/x
  3. Step 3: Cross multiply
    149,059.72x = 223,675.70 × 78,939.04
  4. Step 4: Simplify right side
    149,059.72x = 17,656,745,029.33
  5. Step 5: Solve for x
    x = 17,656,745,029.33/149,059.72
  6. Step 6: Final answer
    x = 118,454.17

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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.