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Finding the Fourth Proportional to 128,370.05, 192,555.62 and 84,275.81

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Solution

The fourth proportional to 128,370.05, 192,555.62 and 84,275.81 is: 126,414.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,370.05 : 192,555.62 = 84,275.81 : x
  2. Step 2: Convert to fraction form
    128,370.05/192,555.62 = 84,275.81/x
  3. Step 3: Cross multiply
    128,370.05x = 192,555.62 × 84,275.81
  4. Step 4: Simplify right side
    128,370.05x = 16,227,779,461.40
  5. Step 5: Solve for x
    x = 16,227,779,461.40/128,370.05
  6. Step 6: Final answer
    x = 126,414.07

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