Home / 135,432.39-186,927.81-90,112.29

Finding the Fourth Proportional to 135,432.39, 186,927.81 and 90,112.29

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Solution

The fourth proportional to 135,432.39, 186,927.81 and 90,112.29 is: 124,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,432.39 : 186,927.81 = 90,112.29 : x
  2. Step 2: Convert to fraction form
    135,432.39/186,927.81 = 90,112.29/x
  3. Step 3: Cross multiply
    135,432.39x = 186,927.81 × 90,112.29
  4. Step 4: Simplify right side
    135,432.39x = 16,844,493,023.78
  5. Step 5: Solve for x
    x = 16,844,493,023.78/135,432.39
  6. Step 6: Final answer
    x = 124,375.66

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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.