Home / 135,820.42-187,412.28-75,391.58

Finding the Fourth Proportional to 135,820.42, 187,412.28 and 75,391.58

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Solution

The fourth proportional to 135,820.42, 187,412.28 and 75,391.58 is: 104,029.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,820.42 : 187,412.28 = 75,391.58 : x
  2. Step 2: Convert to fraction form
    135,820.42/187,412.28 = 75,391.58/x
  3. Step 3: Cross multiply
    135,820.42x = 187,412.28 × 75,391.58
  4. Step 4: Simplify right side
    135,820.42x = 14,129,307,900.60
  5. Step 5: Solve for x
    x = 14,129,307,900.60/135,820.42
  6. Step 6: Final answer
    x = 104,029.33

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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.