Home / 138,768.29-191,504.88-85,042.93

Finding the Fourth Proportional to 138,768.29, 191,504.88 and 85,042.93

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Solution

The fourth proportional to 138,768.29, 191,504.88 and 85,042.93 is: 117,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,768.29 : 191,504.88 = 85,042.93 : x
  2. Step 2: Convert to fraction form
    138,768.29/191,504.88 = 85,042.93/x
  3. Step 3: Cross multiply
    138,768.29x = 191,504.88 × 85,042.93
  4. Step 4: Simplify right side
    138,768.29x = 16,286,136,104.50
  5. Step 5: Solve for x
    x = 16,286,136,104.50/138,768.29
  6. Step 6: Final answer
    x = 117,362.09

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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.