Home / 135,914.90-187,563.84-79,315.34

Finding the Fourth Proportional to 135,914.90, 187,563.84 and 79,315.34

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Solution

The fourth proportional to 135,914.90, 187,563.84 and 79,315.34 is: 109,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,914.90 : 187,563.84 = 79,315.34 : x
  2. Step 2: Convert to fraction form
    135,914.90/187,563.84 = 79,315.34/x
  3. Step 3: Cross multiply
    135,914.90x = 187,563.84 × 79,315.34
  4. Step 4: Simplify right side
    135,914.90x = 14,876,689,741.31
  5. Step 5: Solve for x
    x = 14,876,689,741.31/135,914.90
  6. Step 6: Final answer
    x = 109,455.91

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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.