Home / 135,600.64-187,090.20-78,235.44

Finding the Fourth Proportional to 135,600.64, 187,090.20 and 78,235.44

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Solution

The fourth proportional to 135,600.64, 187,090.20 and 78,235.44 is: 107,942.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,600.64 : 187,090.20 = 78,235.44 : x
  2. Step 2: Convert to fraction form
    135,600.64/187,090.20 = 78,235.44/x
  3. Step 3: Cross multiply
    135,600.64x = 187,090.20 × 78,235.44
  4. Step 4: Simplify right side
    135,600.64x = 14,637,084,116.69
  5. Step 5: Solve for x
    x = 14,637,084,116.69/135,600.64
  6. Step 6: Final answer
    x = 107,942.59

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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.