Home / 133,117.11-183,742.29-82,145.43

Finding the Fourth Proportional to 133,117.11, 183,742.29 and 82,145.43

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Solution

The fourth proportional to 133,117.11, 183,742.29 and 82,145.43 is: 113,385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,117.11 : 183,742.29 = 82,145.43 : x
  2. Step 2: Convert to fraction form
    133,117.11/183,742.29 = 82,145.43/x
  3. Step 3: Cross multiply
    133,117.11x = 183,742.29 × 82,145.43
  4. Step 4: Simplify right side
    133,117.11x = 15,093,589,421.23
  5. Step 5: Solve for x
    x = 15,093,589,421.23/133,117.11
  6. Step 6: Final answer
    x = 113,385.80

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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.