Home / 135,405.92-186,862.14-74,976.45

Finding the Fourth Proportional to 135,405.92, 186,862.14 and 74,976.45

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Solution

The fourth proportional to 135,405.92, 186,862.14 and 74,976.45 is: 103,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,405.92 : 186,862.14 = 74,976.45 : x
  2. Step 2: Convert to fraction form
    135,405.92/186,862.14 = 74,976.45/x
  3. Step 3: Cross multiply
    135,405.92x = 186,862.14 × 74,976.45
  4. Step 4: Simplify right side
    135,405.92x = 14,010,259,896.60
  5. Step 5: Solve for x
    x = 14,010,259,896.60/135,405.92
  6. Step 6: Final answer
    x = 103,468.59

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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.