Home / 135,378.39-186,823.65-74,949.96

Finding the Fourth Proportional to 135,378.39, 186,823.65 and 74,949.96

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Solution

The fourth proportional to 135,378.39, 186,823.65 and 74,949.96 is: 103,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,378.39 : 186,823.65 = 74,949.96 : x
  2. Step 2: Convert to fraction form
    135,378.39/186,823.65 = 74,949.96/x
  3. Step 3: Cross multiply
    135,378.39x = 186,823.65 × 74,949.96
  4. Step 4: Simplify right side
    135,378.39x = 14,002,425,094.55
  5. Step 5: Solve for x
    x = 14,002,425,094.55/135,378.39
  6. Step 6: Final answer
    x = 103,431.76

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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.