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Finding the Fourth Proportional to 129,765.40, 194,513.70 and 70,475.80

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Solution

The fourth proportional to 129,765.40, 194,513.70 and 70,475.80 is: 105,640.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765.40 : 194,513.70 = 70,475.80 : x
  2. Step 2: Convert to fraction form
    129,765.40/194,513.70 = 70,475.80/x
  3. Step 3: Cross multiply
    129,765.40x = 194,513.70 × 70,475.80
  4. Step 4: Simplify right side
    129,765.40x = 13,708,508,618.46
  5. Step 5: Solve for x
    x = 13,708,508,618.46/129,765.40
  6. Step 6: Final answer
    x = 105,640.71

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