Home / 135,161.45-186,514.81-74,727.35

Finding the Fourth Proportional to 135,161.45, 186,514.81 and 74,727.35

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Solution

The fourth proportional to 135,161.45, 186,514.81 and 74,727.35 is: 103,119.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,161.45 : 186,514.81 = 74,727.35 : x
  2. Step 2: Convert to fraction form
    135,161.45/186,514.81 = 74,727.35/x
  3. Step 3: Cross multiply
    135,161.45x = 186,514.81 × 74,727.35
  4. Step 4: Simplify right side
    135,161.45x = 13,937,757,487.05
  5. Step 5: Solve for x
    x = 13,937,757,487.05/135,161.45
  6. Step 6: Final answer
    x = 103,119.32

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1.5x scale

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.