Home / 138,103.11-190,596.92-84,419.55

Finding the Fourth Proportional to 138,103.11, 190,596.92 and 84,419.55

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Solution

The fourth proportional to 138,103.11, 190,596.92 and 84,419.55 is: 116,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,103.11 : 190,596.92 = 84,419.55 : x
  2. Step 2: Convert to fraction form
    138,103.11/190,596.92 = 84,419.55/x
  3. Step 3: Cross multiply
    138,103.11x = 190,596.92 × 84,419.55
  4. Step 4: Simplify right side
    138,103.11x = 16,090,105,795.69
  5. Step 5: Solve for x
    x = 16,090,105,795.69/138,103.11
  6. Step 6: Final answer
    x = 116,507.92

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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.