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Finding the Fourth Proportional to 118,890, 178,209.32 and 43,962.03

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Solution

The fourth proportional to 118,890, 178,209.32 and 43,962.03 is: 65,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,890 : 178,209.32 = 43,962.03 : x
  2. Step 2: Convert to fraction form
    118,890/178,209.32 = 43,962.03/x
  3. Step 3: Cross multiply
    118,890x = 178,209.32 × 43,962.03
  4. Step 4: Simplify right side
    118,890x = 7,834,443,252.31
  5. Step 5: Solve for x
    x = 7,834,443,252.31/118,890
  6. Step 6: Final answer
    x = 65,896.57

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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.