Home / 134,981.20-202,558.20-78,821.20

Finding the Fourth Proportional to 134,981.20, 202,558.20 and 78,821.20

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Solution

The fourth proportional to 134,981.20, 202,558.20 and 78,821.20 is: 118,282.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,981.20 : 202,558.20 = 78,821.20 : x
  2. Step 2: Convert to fraction form
    134,981.20/202,558.20 = 78,821.20/x
  3. Step 3: Cross multiply
    134,981.20x = 202,558.20 × 78,821.20
  4. Step 4: Simplify right side
    134,981.20x = 15,965,880,393.84
  5. Step 5: Solve for x
    x = 15,965,880,393.84/134,981.20
  6. Step 6: Final answer
    x = 118,282.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.