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Finding the Fourth Proportional to 128,291.63, 177,036.87 and 70,147.29

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Solution

The fourth proportional to 128,291.63, 177,036.87 and 70,147.29 is: 96,800.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,291.63 : 177,036.87 = 70,147.29 : x
  2. Step 2: Convert to fraction form
    128,291.63/177,036.87 = 70,147.29/x
  3. Step 3: Cross multiply
    128,291.63x = 177,036.87 × 70,147.29
  4. Step 4: Simplify right side
    128,291.63x = 12,418,657,587.52
  5. Step 5: Solve for x
    x = 12,418,657,587.52/128,291.63
  6. Step 6: Final answer
    x = 96,800.22

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