Home / 135,819.03-187,430.12-75,389.54

Finding the Fourth Proportional to 135,819.03, 187,430.12 and 75,389.54

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Solution

The fourth proportional to 135,819.03, 187,430.12 and 75,389.54 is: 104,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,819.03 : 187,430.12 = 75,389.54 : x
  2. Step 2: Convert to fraction form
    135,819.03/187,430.12 = 75,389.54/x
  3. Step 3: Cross multiply
    135,819.03x = 187,430.12 × 75,389.54
  4. Step 4: Simplify right side
    135,819.03x = 14,130,269,497.56
  5. Step 5: Solve for x
    x = 14,130,269,497.56/135,819.03
  6. Step 6: Final answer
    x = 104,037.48

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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.