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Finding the Fourth Proportional to 118,855.40, 178,274.12 and 43,940.52

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Solution

The fourth proportional to 118,855.40, 178,274.12 and 43,940.52 is: 65,907.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,855.40 : 178,274.12 = 43,940.52 : x
  2. Step 2: Convert to fraction form
    118,855.40/178,274.12 = 43,940.52/x
  3. Step 3: Cross multiply
    118,855.40x = 178,274.12 × 43,940.52
  4. Step 4: Simplify right side
    118,855.40x = 7,833,457,315.64
  5. Step 5: Solve for x
    x = 7,833,457,315.64/118,855.40
  6. Step 6: Final answer
    x = 65,907.46

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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.