Home / 123,724.06-185,679.36-90,529.75

Finding the Fourth Proportional to 123,724.06, 185,679.36 and 90,529.75

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Solution

The fourth proportional to 123,724.06, 185,679.36 and 90,529.75 is: 135,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,724.06 : 185,679.36 = 90,529.75 : x
  2. Step 2: Convert to fraction form
    123,724.06/185,679.36 = 90,529.75/x
  3. Step 3: Cross multiply
    123,724.06x = 185,679.36 × 90,529.75
  4. Step 4: Simplify right side
    123,724.06x = 16,809,506,040.96
  5. Step 5: Solve for x
    x = 16,809,506,040.96/123,724.06
  6. Step 6: Final answer
    x = 135,862.87

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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.