Home / 135,170.94-186,561.45-81,463.62

Finding the Fourth Proportional to 135,170.94, 186,561.45 and 81,463.62

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Solution

The fourth proportional to 135,170.94, 186,561.45 and 81,463.62 is: 112,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,170.94 : 186,561.45 = 81,463.62 : x
  2. Step 2: Convert to fraction form
    135,170.94/186,561.45 = 81,463.62/x
  3. Step 3: Cross multiply
    135,170.94x = 186,561.45 × 81,463.62
  4. Step 4: Simplify right side
    135,170.94x = 15,197,971,069.45
  5. Step 5: Solve for x
    x = 15,197,971,069.45/135,170.94
  6. Step 6: Final answer
    x = 112,435.20

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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.