Home / 135,816.84-187,296.75-81,360.41

Finding the Fourth Proportional to 135,816.84, 187,296.75 and 81,360.41

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Solution

The fourth proportional to 135,816.84, 187,296.75 and 81,360.41 is: 112,199.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,816.84 : 187,296.75 = 81,360.41 : x
  2. Step 2: Convert to fraction form
    135,816.84/187,296.75 = 81,360.41/x
  3. Step 3: Cross multiply
    135,816.84x = 187,296.75 × 81,360.41
  4. Step 4: Simplify right side
    135,816.84x = 15,238,539,435.18
  5. Step 5: Solve for x
    x = 15,238,539,435.18/135,816.84
  6. Step 6: Final answer
    x = 112,199.19

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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.