Home / 136,679.28-205,084.44-74,349.72

Finding the Fourth Proportional to 136,679.28, 205,084.44 and 74,349.72

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Solution

The fourth proportional to 136,679.28, 205,084.44 and 74,349.72 is: 111,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,679.28 : 205,084.44 = 74,349.72 : x
  2. Step 2: Convert to fraction form
    136,679.28/205,084.44 = 74,349.72/x
  3. Step 3: Cross multiply
    136,679.28x = 205,084.44 × 74,349.72
  4. Step 4: Simplify right side
    136,679.28x = 15,247,970,690.36
  5. Step 5: Solve for x
    x = 15,247,970,690.36/136,679.28
  6. Step 6: Final answer
    x = 111,560.22

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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.