Home / 134,919.78-186,188.10-74,489.12

Finding the Fourth Proportional to 134,919.78, 186,188.10 and 74,489.12

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Solution

The fourth proportional to 134,919.78, 186,188.10 and 74,489.12 is: 102,794.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,919.78 : 186,188.10 = 74,489.12 : x
  2. Step 2: Convert to fraction form
    134,919.78/186,188.10 = 74,489.12/x
  3. Step 3: Cross multiply
    134,919.78x = 186,188.10 × 74,489.12
  4. Step 4: Simplify right side
    134,919.78x = 13,868,987,723.47
  5. Step 5: Solve for x
    x = 13,868,987,723.47/134,919.78
  6. Step 6: Final answer
    x = 102,794.33

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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.