Home / 134,922.20-186,209.03-78,333.57

Finding the Fourth Proportional to 134,922.20, 186,209.03 and 78,333.57

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Solution

The fourth proportional to 134,922.20, 186,209.03 and 78,333.57 is: 108,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,922.20 : 186,209.03 = 78,333.57 : x
  2. Step 2: Convert to fraction form
    134,922.20/186,209.03 = 78,333.57/x
  3. Step 3: Cross multiply
    134,922.20x = 186,209.03 × 78,333.57
  4. Step 4: Simplify right side
    134,922.20x = 14,586,417,694.47
  5. Step 5: Solve for x
    x = 14,586,417,694.47/134,922.20
  6. Step 6: Final answer
    x = 108,109.85

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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.