Home / 145,414.40-218,121.60-122,259.20

Finding the Fourth Proportional to 145,414.40, 218,121.60 and 122,259.20

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Solution

The fourth proportional to 145,414.40, 218,121.60 and 122,259.20 is: 183,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,414.40 : 218,121.60 = 122,259.20 : x
  2. Step 2: Convert to fraction form
    145,414.40/218,121.60 = 122,259.20/x
  3. Step 3: Cross multiply
    145,414.40x = 218,121.60 × 122,259.20
  4. Step 4: Simplify right side
    145,414.40x = 26,667,372,318.72
  5. Step 5: Solve for x
    x = 26,667,372,318.72/145,414.40
  6. Step 6: Final answer
    x = 183,388.80

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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.