Home / 128,268.56-192,406.22-60,784.76

Finding the Fourth Proportional to 128,268.56, 192,406.22 and 60,784.76

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Solution

The fourth proportional to 128,268.56, 192,406.22 and 60,784.76 is: 91,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,268.56 : 192,406.22 = 60,784.76 : x
  2. Step 2: Convert to fraction form
    128,268.56/192,406.22 = 60,784.76/x
  3. Step 3: Cross multiply
    128,268.56x = 192,406.22 × 60,784.76
  4. Step 4: Simplify right side
    128,268.56x = 11,695,365,905.21
  5. Step 5: Solve for x
    x = 11,695,365,905.21/128,268.56
  6. Step 6: Final answer
    x = 91,178.74

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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.