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Finding the Fourth Proportional to 118,888.86, 178,333.97 and 30,142.56

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Solution

The fourth proportional to 118,888.86, 178,333.97 and 30,142.56 is: 45,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,888.86 : 178,333.97 = 30,142.56 : x
  2. Step 2: Convert to fraction form
    118,888.86/178,333.97 = 30,142.56/x
  3. Step 3: Cross multiply
    118,888.86x = 178,333.97 × 30,142.56
  4. Step 4: Simplify right side
    118,888.86x = 5,375,442,390.76
  5. Step 5: Solve for x
    x = 5,375,442,390.76/118,888.86
  6. Step 6: Final answer
    x = 45,214.01

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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.