Home / 135,789.93-187,389.85-75,361.30

Finding the Fourth Proportional to 135,789.93, 187,389.85 and 75,361.30

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Solution

The fourth proportional to 135,789.93, 187,389.85 and 75,361.30 is: 103,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,789.93 : 187,389.85 = 75,361.30 : x
  2. Step 2: Convert to fraction form
    135,789.93/187,389.85 = 75,361.30/x
  3. Step 3: Cross multiply
    135,789.93x = 187,389.85 × 75,361.30
  4. Step 4: Simplify right side
    135,789.93x = 14,121,942,702.81
  5. Step 5: Solve for x
    x = 14,121,942,702.81/135,789.93
  6. Step 6: Final answer
    x = 103,998.45

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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.