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Finding the Fourth Proportional to 128,069.91, 176,720.18 and 71,483.67

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Solution

The fourth proportional to 128,069.91, 176,720.18 and 71,483.67 is: 98,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,069.91 : 176,720.18 = 71,483.67 : x
  2. Step 2: Convert to fraction form
    128,069.91/176,720.18 = 71,483.67/x
  3. Step 3: Cross multiply
    128,069.91x = 176,720.18 × 71,483.67
  4. Step 4: Simplify right side
    128,069.91x = 12,632,606,672.04
  5. Step 5: Solve for x
    x = 12,632,606,672.04/128,069.91
  6. Step 6: Final answer
    x = 98,638.37

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