Home / 90,997.67-136,507.44-86,021.03

Finding the Fourth Proportional to 90,997.67, 136,507.44 and 86,021.03

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Solution

The fourth proportional to 90,997.67, 136,507.44 and 86,021.03 is: 129,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,997.67 : 136,507.44 = 86,021.03 : x
  2. Step 2: Convert to fraction form
    90,997.67/136,507.44 = 86,021.03/x
  3. Step 3: Cross multiply
    90,997.67x = 136,507.44 × 86,021.03
  4. Step 4: Simplify right side
    90,997.67x = 11,742,510,591.46
  5. Step 5: Solve for x
    x = 11,742,510,591.46/90,997.67
  6. Step 6: Final answer
    x = 129,041.88

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1.5x scale

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.