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Finding the Fourth Proportional to 135,004.01, 186,304.37 and 74,578.87

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Solution

The fourth proportional to 135,004.01, 186,304.37 and 74,578.87 is: 102,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,004.01 : 186,304.37 = 74,578.87 : x
  2. Step 2: Convert to fraction form
    135,004.01/186,304.37 = 74,578.87/x
  3. Step 3: Cross multiply
    135,004.01x = 186,304.37 × 74,578.87
  4. Step 4: Simplify right side
    135,004.01x = 13,894,369,390.66
  5. Step 5: Solve for x
    x = 13,894,369,390.66/135,004.01
  6. Step 6: Final answer
    x = 102,918.20

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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.