Home / 138,681.11-191,328.56-102,469.85

Finding the Fourth Proportional to 138,681.11, 191,328.56 and 102,469.85

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Solution

The fourth proportional to 138,681.11, 191,328.56 and 102,469.85 is: 141,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,681.11 : 191,328.56 = 102,469.85 : x
  2. Step 2: Convert to fraction form
    138,681.11/191,328.56 = 102,469.85/x
  3. Step 3: Cross multiply
    138,681.11x = 191,328.56 × 102,469.85
  4. Step 4: Simplify right side
    138,681.11x = 19,605,408,809.89
  5. Step 5: Solve for x
    x = 19,605,408,809.89/138,681.11
  6. Step 6: Final answer
    x = 141,370.44

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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.