Home / 135,413.36-186,868.15-74,982.71

Finding the Fourth Proportional to 135,413.36, 186,868.15 and 74,982.71

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Solution

The fourth proportional to 135,413.36, 186,868.15 and 74,982.71 is: 103,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,413.36 : 186,868.15 = 74,982.71 : x
  2. Step 2: Convert to fraction form
    135,413.36/186,868.15 = 74,982.71/x
  3. Step 3: Cross multiply
    135,413.36x = 186,868.15 × 74,982.71
  4. Step 4: Simplify right side
    135,413.36x = 14,011,880,088.43
  5. Step 5: Solve for x
    x = 14,011,880,088.43/135,413.36
  6. Step 6: Final answer
    x = 103,474.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.