Home / 135,640.95-187,186.76-75,214.14

Finding the Fourth Proportional to 135,640.95, 187,186.76 and 75,214.14

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Solution

The fourth proportional to 135,640.95, 187,186.76 and 75,214.14 is: 103,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,640.95 : 187,186.76 = 75,214.14 : x
  2. Step 2: Convert to fraction form
    135,640.95/187,186.76 = 75,214.14/x
  3. Step 3: Cross multiply
    135,640.95x = 187,186.76 × 75,214.14
  4. Step 4: Simplify right side
    135,640.95x = 14,079,091,172.79
  5. Step 5: Solve for x
    x = 14,079,091,172.79/135,640.95
  6. Step 6: Final answer
    x = 103,796.76

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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.