Home / 135,579.97-187,107.24-78,197.95

Finding the Fourth Proportional to 135,579.97, 187,107.24 and 78,197.95

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Solution

The fourth proportional to 135,579.97, 187,107.24 and 78,197.95 is: 107,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,579.97 : 187,107.24 = 78,197.95 : x
  2. Step 2: Convert to fraction form
    135,579.97/187,107.24 = 78,197.95/x
  3. Step 3: Cross multiply
    135,579.97x = 187,107.24 × 78,197.95
  4. Step 4: Simplify right side
    135,579.97x = 14,631,402,598.16
  5. Step 5: Solve for x
    x = 14,631,402,598.16/135,579.97
  6. Step 6: Final answer
    x = 107,917.14

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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.