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Finding the Fourth Proportional to 98,172.18, 135,479.52 and 55,730.70

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Solution

The fourth proportional to 98,172.18, 135,479.52 and 55,730.70 is: 76,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,172.18 : 135,479.52 = 55,730.70 : x
  2. Step 2: Convert to fraction form
    98,172.18/135,479.52 = 55,730.70/x
  3. Step 3: Cross multiply
    98,172.18x = 135,479.52 × 55,730.70
  4. Step 4: Simplify right side
    98,172.18x = 7,550,368,485.26
  5. Step 5: Solve for x
    x = 7,550,368,485.26/98,172.18
  6. Step 6: Final answer
    x = 76,909.45

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