Home / 136,923.20-205,039.20-89,921.60

Finding the Fourth Proportional to 136,923.20, 205,039.20 and 89,921.60

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Solution

The fourth proportional to 136,923.20, 205,039.20 and 89,921.60 is: 134,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,923.20 : 205,039.20 = 89,921.60 : x
  2. Step 2: Convert to fraction form
    136,923.20/205,039.20 = 89,921.60/x
  3. Step 3: Cross multiply
    136,923.20x = 205,039.20 × 89,921.60
  4. Step 4: Simplify right side
    136,923.20x = 18,437,452,926.72
  5. Step 5: Solve for x
    x = 18,437,452,926.72/136,923.20
  6. Step 6: Final answer
    x = 134,655.43

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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.