Home / 107,615.40-161,423.10-68,346.60

Finding the Fourth Proportional to 107,615.40, 161,423.10 and 68,346.60

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Solution

The fourth proportional to 107,615.40, 161,423.10 and 68,346.60 is: 102,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,615.40 : 161,423.10 = 68,346.60 : x
  2. Step 2: Convert to fraction form
    107,615.40/161,423.10 = 68,346.60/x
  3. Step 3: Cross multiply
    107,615.40x = 161,423.10 × 68,346.60
  4. Step 4: Simplify right side
    107,615.40x = 11,032,720,046.46
  5. Step 5: Solve for x
    x = 11,032,720,046.46/107,615.40
  6. Step 6: Final answer
    x = 102,519.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.