Home / 135,502.44-186,988.41-78,144.18

Finding the Fourth Proportional to 135,502.44, 186,988.41 and 78,144.18

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Solution

The fourth proportional to 135,502.44, 186,988.41 and 78,144.18 is: 107,836.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,502.44 : 186,988.41 = 78,144.18 : x
  2. Step 2: Convert to fraction form
    135,502.44/186,988.41 = 78,144.18/x
  3. Step 3: Cross multiply
    135,502.44x = 186,988.41 × 78,144.18
  4. Step 4: Simplify right side
    135,502.44x = 14,612,055,968.95
  5. Step 5: Solve for x
    x = 14,612,055,968.95/135,502.44
  6. Step 6: Final answer
    x = 107,836.11

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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.