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Finding the Fourth Proportional to 178,538.67, 267,877.73 and 78,628.66

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Solution

The fourth proportional to 178,538.67, 267,877.73 and 78,628.66 is: 117,973.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,538.67 : 267,877.73 = 78,628.66 : x
  2. Step 2: Convert to fraction form
    178,538.67/267,877.73 = 78,628.66/x
  3. Step 3: Cross multiply
    178,538.67x = 267,877.73 × 78,628.66
  4. Step 4: Simplify right side
    178,538.67x = 21,062,866,480.62
  5. Step 5: Solve for x
    x = 21,062,866,480.62/178,538.67
  6. Step 6: Final answer
    x = 117,973.69

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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.