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Finding the Fourth Proportional to 178,480.65, 267,634.86 and 103,619.64

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Solution

The fourth proportional to 178,480.65, 267,634.86 and 103,619.64 is: 155,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,480.65 : 267,634.86 = 103,619.64 : x
  2. Step 2: Convert to fraction form
    178,480.65/267,634.86 = 103,619.64/x
  3. Step 3: Cross multiply
    178,480.65x = 267,634.86 × 103,619.64
  4. Step 4: Simplify right side
    178,480.65x = 27,732,227,844.65
  5. Step 5: Solve for x
    x = 27,732,227,844.65/178,480.65
  6. Step 6: Final answer
    x = 155,379.46

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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.