Home / 91,023.67-136,546.44-86,047.03

Finding the Fourth Proportional to 91,023.67, 136,546.44 and 86,047.03

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Solution

The fourth proportional to 91,023.67, 136,546.44 and 86,047.03 is: 129,080.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,023.67 : 136,546.44 = 86,047.03 : x
  2. Step 2: Convert to fraction form
    91,023.67/136,546.44 = 86,047.03/x
  3. Step 3: Cross multiply
    91,023.67x = 136,546.44 × 86,047.03
  4. Step 4: Simplify right side
    91,023.67x = 11,749,415,619.07
  5. Step 5: Solve for x
    x = 11,749,415,619.07/91,023.67
  6. Step 6: Final answer
    x = 129,080.88

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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.