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Finding the Fourth Proportional to 135,360.78, 186,795.62 and 74,930.16

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Solution

The fourth proportional to 135,360.78, 186,795.62 and 74,930.16 is: 103,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,360.78 : 186,795.62 = 74,930.16 : x
  2. Step 2: Convert to fraction form
    135,360.78/186,795.62 = 74,930.16/x
  3. Step 3: Cross multiply
    135,360.78x = 186,795.62 × 74,930.16
  4. Step 4: Simplify right side
    135,360.78x = 13,996,625,693.90
  5. Step 5: Solve for x
    x = 13,996,625,693.90/135,360.78
  6. Step 6: Final answer
    x = 103,402.37

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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.