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Finding the Fourth Proportional to 135,489.92, 186,966.72 and 75,054.92

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Solution

The fourth proportional to 135,489.92, 186,966.72 and 75,054.92 is: 103,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,489.92 : 186,966.72 = 75,054.92 : x
  2. Step 2: Convert to fraction form
    135,489.92/186,966.72 = 75,054.92/x
  3. Step 3: Cross multiply
    135,489.92x = 186,966.72 × 75,054.92
  4. Step 4: Simplify right side
    135,489.92x = 14,032,772,212.26
  5. Step 5: Solve for x
    x = 14,032,772,212.26/135,489.92
  6. Step 6: Final answer
    x = 103,570.60

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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.