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Finding the Fourth Proportional to 134,507.40, 185,613.09 and 77,143.76

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Solution

The fourth proportional to 134,507.40, 185,613.09 and 77,143.76 is: 106,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,507.40 : 185,613.09 = 77,143.76 : x
  2. Step 2: Convert to fraction form
    134,507.40/185,613.09 = 77,143.76/x
  3. Step 3: Cross multiply
    134,507.40x = 185,613.09 × 77,143.76
  4. Step 4: Simplify right side
    134,507.40x = 14,318,891,667.82
  5. Step 5: Solve for x
    x = 14,318,891,667.82/134,507.40
  6. Step 6: Final answer
    x = 106,454.30

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