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Finding the Fourth Proportional to 120,413.40, 180,731.16 and 61,291.68

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Solution

The fourth proportional to 120,413.40, 180,731.16 and 61,291.68 is: 91,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,413.40 : 180,731.16 = 61,291.68 : x
  2. Step 2: Convert to fraction form
    120,413.40/180,731.16 = 61,291.68/x
  3. Step 3: Cross multiply
    120,413.40x = 180,731.16 × 61,291.68
  4. Step 4: Simplify right side
    120,413.40x = 11,077,316,424.75
  5. Step 5: Solve for x
    x = 11,077,316,424.75/120,413.40
  6. Step 6: Final answer
    x = 91,994.05

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