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Finding the Fourth Proportional to 135,315.08, 186,735.17 and 74,889.89

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Solution

The fourth proportional to 135,315.08, 186,735.17 and 74,889.89 is: 103,348.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,315.08 : 186,735.17 = 74,889.89 : x
  2. Step 2: Convert to fraction form
    135,315.08/186,735.17 = 74,889.89/x
  3. Step 3: Cross multiply
    135,315.08x = 186,735.17 × 74,889.89
  4. Step 4: Simplify right side
    135,315.08x = 13,984,576,340.43
  5. Step 5: Solve for x
    x = 13,984,576,340.43/135,315.08
  6. Step 6: Final answer
    x = 103,348.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.