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Finding the Fourth Proportional to 99,931,978.60, 149,674,019.10 and 82,016,074.60

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Solution

The fourth proportional to 99,931,978.60, 149,674,019.10 and 82,016,074.60 is: 122,840,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931,978.60 : 149,674,019.10 = 82,016,074.60 : x
  2. Step 2: Convert to fraction form
    99,931,978.60/149,674,019.10 = 82,016,074.60/x
  3. Step 3: Cross multiply
    99,931,978.60x = 149,674,019.10 × 82,016,074.60
  4. Step 4: Simplify right side
    99,931,978.60x = 12,275,675,516,187,424
  5. Step 5: Solve for x
    x = 12,275,675,516,187,424/99,931,978.60
  6. Step 6: Final answer
    x = 122,840,312.86

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