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Finding the Fourth Proportional to 118,918.48, 178,396.08 and 40,026.48

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Solution

The fourth proportional to 118,918.48, 178,396.08 and 40,026.48 is: 60,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,918.48 : 178,396.08 = 40,026.48 : x
  2. Step 2: Convert to fraction form
    118,918.48/178,396.08 = 40,026.48/x
  3. Step 3: Cross multiply
    118,918.48x = 178,396.08 × 40,026.48
  4. Step 4: Simplify right side
    118,918.48x = 7,140,567,128.20
  5. Step 5: Solve for x
    x = 7,140,567,128.20/118,918.48
  6. Step 6: Final answer
    x = 60,045.90

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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.