Home / 135,563.04-187,059.24-78,204.51

Finding the Fourth Proportional to 135,563.04, 187,059.24 and 78,204.51

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Solution

The fourth proportional to 135,563.04, 187,059.24 and 78,204.51 is: 107,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,563.04 : 187,059.24 = 78,204.51 : x
  2. Step 2: Convert to fraction form
    135,563.04/187,059.24 = 78,204.51/x
  3. Step 3: Cross multiply
    135,563.04x = 187,059.24 × 78,204.51
  4. Step 4: Simplify right side
    135,563.04x = 14,628,876,205.17
  5. Step 5: Solve for x
    x = 14,628,876,205.17/135,563.04
  6. Step 6: Final answer
    x = 107,911.98

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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.