Home / 135,167.40-186,530.04-74,738.16

Finding the Fourth Proportional to 135,167.40, 186,530.04 and 74,738.16

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Solution

The fourth proportional to 135,167.40, 186,530.04 and 74,738.16 is: 103,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,167.40 : 186,530.04 = 74,738.16 : x
  2. Step 2: Convert to fraction form
    135,167.40/186,530.04 = 74,738.16/x
  3. Step 3: Cross multiply
    135,167.40x = 186,530.04 × 74,738.16
  4. Step 4: Simplify right side
    135,167.40x = 13,940,911,974.33
  5. Step 5: Solve for x
    x = 13,940,911,974.33/135,167.40
  6. Step 6: Final answer
    x = 103,138.12

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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.