Home / 135,997.24-187,615.80-90,631.02

Finding the Fourth Proportional to 135,997.24, 187,615.80 and 90,631.02

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Solution

The fourth proportional to 135,997.24, 187,615.80 and 90,631.02 is: 125,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,997.24 : 187,615.80 = 90,631.02 : x
  2. Step 2: Convert to fraction form
    135,997.24/187,615.80 = 90,631.02/x
  3. Step 3: Cross multiply
    135,997.24x = 187,615.80 × 90,631.02
  4. Step 4: Simplify right side
    135,997.24x = 17,003,811,322.12
  5. Step 5: Solve for x
    x = 17,003,811,322.12/135,997.24
  6. Step 6: Final answer
    x = 125,030.56

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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.