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Finding the Fourth Proportional to 118,756.91, 178,090.26 and 38,775.89

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Solution

The fourth proportional to 118,756.91, 178,090.26 and 38,775.89 is: 58,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,756.91 : 178,090.26 = 38,775.89 : x
  2. Step 2: Convert to fraction form
    118,756.91/178,090.26 = 38,775.89/x
  3. Step 3: Cross multiply
    118,756.91x = 178,090.26 × 38,775.89
  4. Step 4: Simplify right side
    118,756.91x = 6,905,608,631.65
  5. Step 5: Solve for x
    x = 6,905,608,631.65/118,756.91
  6. Step 6: Final answer
    x = 58,149.11

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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.