Home / 135,157.39-186,530.79-74,732.61

Finding the Fourth Proportional to 135,157.39, 186,530.79 and 74,732.61

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Solution

The fourth proportional to 135,157.39, 186,530.79 and 74,732.61 is: 103,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,157.39 : 186,530.79 = 74,732.61 : x
  2. Step 2: Convert to fraction form
    135,157.39/186,530.79 = 74,732.61/x
  3. Step 3: Cross multiply
    135,157.39x = 186,530.79 × 74,732.61
  4. Step 4: Simplify right side
    135,157.39x = 13,939,932,782.06
  5. Step 5: Solve for x
    x = 13,939,932,782.06/135,157.39
  6. Step 6: Final answer
    x = 103,138.52

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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.