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Finding the Fourth Proportional to 113,413.50, 156,510.72 and 65,669.40

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Solution

The fourth proportional to 113,413.50, 156,510.72 and 65,669.40 is: 90,623.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,413.50 : 156,510.72 = 65,669.40 : x
  2. Step 2: Convert to fraction form
    113,413.50/156,510.72 = 65,669.40/x
  3. Step 3: Cross multiply
    113,413.50x = 156,510.72 × 65,669.40
  4. Step 4: Simplify right side
    113,413.50x = 10,277,965,075.97
  5. Step 5: Solve for x
    x = 10,277,965,075.97/113,413.50
  6. Step 6: Final answer
    x = 90,623.82

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