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Finding the Fourth Proportional to 153,930.66, 212,459.72 and 90,288.96

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Solution

The fourth proportional to 153,930.66, 212,459.72 and 90,288.96 is: 124,619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,930.66 : 212,459.72 = 90,288.96 : x
  2. Step 2: Convert to fraction form
    153,930.66/212,459.72 = 90,288.96/x
  3. Step 3: Cross multiply
    153,930.66x = 212,459.72 × 90,288.96
  4. Step 4: Simplify right side
    153,930.66x = 19,182,767,160.69
  5. Step 5: Solve for x
    x = 19,182,767,160.69/153,930.66
  6. Step 6: Final answer
    x = 124,619.53

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