Home / 135,741.78-187,327.08-75,315.06

Finding the Fourth Proportional to 135,741.78, 187,327.08 and 75,315.06

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Solution

The fourth proportional to 135,741.78, 187,327.08 and 75,315.06 is: 103,936.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,741.78 : 187,327.08 = 75,315.06 : x
  2. Step 2: Convert to fraction form
    135,741.78/187,327.08 = 75,315.06/x
  3. Step 3: Cross multiply
    135,741.78x = 187,327.08 × 75,315.06
  4. Step 4: Simplify right side
    135,741.78x = 14,108,550,269.82
  5. Step 5: Solve for x
    x = 14,108,550,269.82/135,741.78
  6. Step 6: Final answer
    x = 103,936.68

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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.