Home / 135,638.12-187,175.94-75,220.22

Finding the Fourth Proportional to 135,638.12, 187,175.94 and 75,220.22

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Solution

The fourth proportional to 135,638.12, 187,175.94 and 75,220.22 is: 103,801.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,638.12 : 187,175.94 = 75,220.22 : x
  2. Step 2: Convert to fraction form
    135,638.12/187,175.94 = 75,220.22/x
  3. Step 3: Cross multiply
    135,638.12x = 187,175.94 × 75,220.22
  4. Step 4: Simplify right side
    135,638.12x = 14,079,415,385.51
  5. Step 5: Solve for x
    x = 14,079,415,385.51/135,638.12
  6. Step 6: Final answer
    x = 103,801.32

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1.5x scale

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.