Home / 135,352.85-186,806.94-77,981.24

Finding the Fourth Proportional to 135,352.85, 186,806.94 and 77,981.24

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Solution

The fourth proportional to 135,352.85, 186,806.94 and 77,981.24 is: 107,625.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,352.85 : 186,806.94 = 77,981.24 : x
  2. Step 2: Convert to fraction form
    135,352.85/186,806.94 = 77,981.24/x
  3. Step 3: Cross multiply
    135,352.85x = 186,806.94 × 77,981.24
  4. Step 4: Simplify right side
    135,352.85x = 14,567,436,821.81
  5. Step 5: Solve for x
    x = 14,567,436,821.81/135,352.85
  6. Step 6: Final answer
    x = 107,625.64

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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.