Home / 135,564.91-187,079.43-75,135.67

Finding the Fourth Proportional to 135,564.91, 187,079.43 and 75,135.67

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Solution

The fourth proportional to 135,564.91, 187,079.43 and 75,135.67 is: 103,687.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,564.91 : 187,079.43 = 75,135.67 : x
  2. Step 2: Convert to fraction form
    135,564.91/187,079.43 = 75,135.67/x
  3. Step 3: Cross multiply
    135,564.91x = 187,079.43 × 75,135.67
  4. Step 4: Simplify right side
    135,564.91x = 14,056,338,316.27
  5. Step 5: Solve for x
    x = 14,056,338,316.27/135,564.91
  6. Step 6: Final answer
    x = 103,687.14

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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.