Home / 97,987.24-135,086.70-66,105.64

Finding the Fourth Proportional to 97,987.24, 135,086.70 and 66,105.64

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Solution

The fourth proportional to 97,987.24, 135,086.70 and 66,105.64 is: 91,134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,987.24 : 135,086.70 = 66,105.64 : x
  2. Step 2: Convert to fraction form
    97,987.24/135,086.70 = 66,105.64/x
  3. Step 3: Cross multiply
    97,987.24x = 135,086.70 × 66,105.64
  4. Step 4: Simplify right side
    97,987.24x = 8,929,992,758.99
  5. Step 5: Solve for x
    x = 8,929,992,758.99/97,987.24
  6. Step 6: Final answer
    x = 91,134.24

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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.